Photo of Elia Merzari

Elia Merzari

Associate Professor

Affiliation(s):

  • Nuclear Engineering

228 Hallowell Building

ebm5351@psu.edu

814-863-7469

 
 

 

Bio

Elia Merzari received his Ph.D. from Tokyo Institute of Technology with a thesis on the use of advanced computational fluid dynamics techniques to the simulation of flows in rod bundles. After graduation, he remained in the same institute as a Japanese Society for the Promotion of Science fellow. In 2009, he joined Argonne National Laboratory, first as a postdoctoral fellow and then as a regular staff in 2010. At Argonne, Dr. Merzari served in several roles in the Nuclear Energy Advanced modeling and simulation (NEAMS) program, for which he is currently the thermal-fluids lead. In 2019, he joined the faculty at Penn State as an associate professor. Dr. Merzari’s research relies on predictive large-scale simulations of turbulence to improve our physical understanding of complex flows and to ultimately design safer and more efficient nuclear reactors. He has received several awards related to these efforts in the area of high performance computing including: ANS Landis Young Member Engineering Achievement Award, ASME's George Westinghouse Silver Medal, and a R&D100 award.

Dr. Merzari's CV

Education

  • BS, Mechanical Engineering/ Energy System Engineering, Politecnico di Milano, 2003
  • MS, Nuclear Engineering, Politecnico di Milano, 2005
  • Ph D, Nuclear Engineering, Tokyo Institute of Technology, 2008

Publications

Journal Articles

  • A. J. Novak, D. Andrs, P. Shriwise, J. Fang, H. Yuan, D. Shaver, Elia Merzari, P. K. Romano and R. C. Martineau, 2022, "Coupled Monte Carlo and thermal-fluid modeling of high temperature gas reactors using Cardinal", Annals of Nuclear Energy, 177
  • Ryan Stewart, Paolo Balestra, David Reger and Elia Merzari, 2022, "Generation of localized reactor point kinetics parameters using coupled neutronic and thermal fluid models for pebble-bed reactor transient analysis", Annals of Nuclear Energy, 174
  • S. Bhushan, M. Elmellouki, D. K. Walters, Y. A. Hassan, Elia Merzari and A. Obabko, 2022, "Analysis of turbulent flow and thermal structures in low-Prandtl number buoyant flows using direct numerical simulations", International Journal of Heat and Mass Transfer, 189
  • S. Bhushan, M. Elmellouki, T. Jamal, G. Busco, D. K. Walters, Y. A. Hassan, Elia Merzari and A. Obabko, 2022, "Assessment of low- and high-fidelity turbulence models for heat transfer predictions in low-prandlt number flows", Nuclear Engineering and Design, 388
  • Henri Dolfen, Jeroen De Ridder, Landon Brockmeyer, Elia Merzari, Graham Kennedy, Katrien Van Tichelen and Joris Degroote, 2022, "A multi-stage approach of simulating turbulence-induced vibrations in a wire-wrapped tube bundle for fretting wear prediction", Journal of Fluids and Structures, 109
  • Lambert H. Fick, Elia Merzari and Yassin A. Hassan, 2022, "Inertial Effects and Anisotropy for the Flow in a Domain of Close Packed Spheres with a Bounding Wall", Nuclear Technology, 208, (3), pp. 539-561
  • Mustafa Alper Yildiz, Elia Merzari, Thien Nguyen and Yassin A. Hassan, 2022, "Modal Decomposition of the Flow in a Randomly Packed Pebble Bed with Direct Numerical Simulation", Nuclear Technology, 208, (8), pp. 1279-1289
  • Victor Coppo Leite and Elia Merzari, 2022, "Turbulent Channel Flow With Spatially Dependent Viscosity: A Numerical Study", Journal of Fluids Engineering, Transactions of the ASME, 144, (1)
  • Ahmad Abdelfattah, Valeria Barra, Natalie Beams, Ryan Bleile, Jed Brown, Jean Sylvain Camier, Robert Carson, Noel Chalmers, Veselin Dobrev, Yohann Dudouit, Paul E Fischer, Ali Karakus, Stefan Kerkemeier, Tzanio Kolev, Yu Hsiang Lan, Elia Merzari, Misun Min, Malachi Phillips, Thilina Rathnayake, Robert Rieben, Thomas Stitt, Ananias Tomboulides, Stanimire Tomov, Vladimir Tomov, Arturo Vargas, Tim Warburton and Kenneth M Weiss, 2021, "GPU algorithms for Efficient Exascale Discretizations", Parallel Computing, 108
  • Tzanio Kolev, Paul E Fischer, Misun Min, Jack Dongarra, Jed Brown, Veselin Dobrev, Tim Warburton, Stanimire Tomov, Mark S. Shephard, Ahmad Abdelfattah, Valeria Barra, Natalie Beams, Jean Sylvain Camier, Noel Chalmers, Yohann Dudouit, Ali Karakus, Ian Karlin, Stefan Kerkemeier, Yu Hsiang Lan, David Medina, Elia Merzari, Aleksandr Obabko, Will Pazner, Thilina Rathnayake, Cameron W. Smith, Lukas Spies, Kasia Swirydowicz, Jeremy Thompson, Ananias Tomboulides and Vladimir Tomov, 2021, "Efficient exascale discretizations: High-order finite element methods", International Journal of High Performance Computing Applications, 35, (6), pp. 527-552
  • Adam Kraus, Elia Merzari, Thomas Norddine, Oana Marin and Sofiane Benhamadouche, 2021, "Large Eddy Simulation of a 5 × 5 rod bundle: Impacts of a central control rod thimble tube", Nuclear Engineering and Design, 381
  • Adam Kraus, Elia Merzari, Thomas Norddine, Oana Marin and Sofiane Benhamadouche, 2021, "Direct numerical simulation of fluid flow in a 5x5 square rod bundle", International Journal of Heat and Fluid Flow, 90
  • Jun Fang, Dillon R. Shaver, Ananias Tomboulides, Misun Min, Paul E Fischer, Yu Hsiang Lan, Ronald Rahaman, Paul Romano, Sofiane Benhamadouche, Yassin A. Hassan, Adam Kraus and Elia Merzari, 2021, "Feasibility of full-core pin resolved CFD simulations of small modular reactor with momentum sources", Nuclear Engineering and Design, 378
  • Tri Nguyen and Elia Merzari, 2021, "On the Impact of Aspect Ratio and Other Geometric Effects on the Stability of Rectangular Thermosiphons", Journal of Heat Transfer, 143, (7)
  • Elia Merzari, Fan-Bill B Cheung, Steven Bajorek and Yassin Hassan, 2021, "40th Anniversary of the first international topical meeting on nuclear reactor thermal-hydraulics: Highlights of thermal-hydraulics research in the past four decades", Nuclear Engineering and Design, 373
  • Paul K. Romano, Steven P. Hamilton, Ronald O. Rahaman, April Novak, Elia Merzari, Sterling M. Harper, Patrick C. Shriwise and Thomas M. Evans, 2021, "A Code-Agnostic Driver Application for Coupled Neutronics and Thermal-Hydraulic Simulations", Nuclear Science and Engineering, 195, (4), pp. 391-411
  • Jun Fang, Yiqi Yu, Haomin Yuan, Elia Merzari and Dillon R. Shaver, 2021, "CFD Evaluation of Pressure Change Along Coolant Passages in Sodium-Cooled Fast Reactor with Nek5000", Nuclear Technology
  • Elia Merzari, Haomin Yuan, Misun Min, Dillon Shaver, Ronald Rahaman, Patrick Shriwise, Paul Romano, Alberto Talamo, Yu Hsiang Lan, Derek Gaston, Richard Martineau, Paul Fischer and Yassin Hassan, 2021, "Cardinal: A Lower-Length-Scale Multiphysics Simulator for Pebble-Bed Reactors", Nuclear Technology, 207, (7), pp. 1118-1141
  • R. Martineau, D. Andrs, R. Carlsen, D. Gaston, J. Hansel, F. Kong, A. Lindsay, C. Permann, A. Slaughter, Elia Merzari, Rui Hu, A. Novak and R. Slaybaugh, 2020, "Multiphysics for nuclear energy applications using a cohesive computational framework", Nuclear Engineering and Design, 367
  • Elia Merzari, Aleksandr Obabko, Paul E Fischer and Manuele Aufiero, 2020, "Wall resolved large eddy simulation of reactor core flows with the spectral element method", Nuclear Engineering and Design, 364
  • Jinyong Feng, Michael Acton, Emilio Baglietto, Adam R. Kraus and Elia Merzari, 2020, "On the relevance of turbulent structures resolution for cross-flow in a helical-coil tube bundle", Annals of Nuclear Energy, 140
  • Jonathan K. Lai, Elia Merzari, Yassin A. Hassan, Paul E Fischer and Oana Marin, 2020, "Verification and validation of large eddy simulation with Nek5000 for cold leg mixing benchmark", Nuclear Engineering and Design, 358
  • Dillon R. Shaver, Nate Salpeter, Ananias Tomboulides, Prasad Vegendla, Adrian Tentner, W. David Pointer and Elia Merzari, 2020, "Simulation of Boiling Two-Phase Flow in a Helical Coil Steam Generator Using the Spectral Element Code Nek-2P", Nuclear Technology, 206, (2), pp. 375-387
  • Haomin Yuan, Mustafa A. Yildiz, Elia Merzari, Yiqi Yu, Aleksandr Obabko, Gerrit Botha, Giacomo Busco, Yassin A. Hassan and Duy Thien Nguyen, 2020, "Spectral element applications in complex nuclear reactor geometries: Tet-to-hex meshing", Nuclear Engineering and Design, 357
  • Mustafa Alper Yildiz, Haomin Yuan, Elia Merzari and Yassin Hassan, 2020, "Numerical Simulation of Isothermal Flow Across Slant Five-Tube Bundle with Spectral Element Method Code Nek5000", Nuclear Technology, 206, (2), pp. 296-306
  • Javier Martínez, Elia Merzari, Michael Acton and Emilio Baglietto, 2020, "Direct Numerical Simulation of Turbulent Flow Inside a Differentially Heated Composite Cavity", Nuclear Technology, 206, (2), pp. 266-282
  • Elia Merzari, Paul E Fischer, Misun Min, Stefan Kerkemeier, Aleksandr Obabko, Dillon Shaver, Haomin Yuan, Yiqi Yu, Javier Martinez, Landon Brockmeyer, Lambert Fick, Giacomo Busco, Alper Yildiz and Yassin Hassan, 2020, "Toward Exascale: Overview of Large Eddy Simulations and Direct Numerical Simulations of Nuclear Reactor Flows with the Spectral Element Method in Nek5000", Nuclear Technology
  • Landon Brockmeyer, Elia Merzari, Jerome Solberg and Yassin Hassan, 2020, "One-way coupled simulation of FIV in a 7-pin wire-wrapped fuel pin bundle", Nuclear Engineering and Design, 356
  • Landon Brockmeyer, Elia Merzari, Jerome Solberg, Kostas Karazis and Yassin Hassan, 2019, "High fidelity simulation and validation of crossflow through a tube bundle and the onset of vibration", International Journal of Non-Linear Mechanics, 117
  • Mustafa Alper Yildiz, Elia Merzari and Yassin A. Hassan, 2019, "Spectral and modal analysis of the flow in a helical coil steam generator experiment with large eddy simulation", International Journal of Heat and Fluid Flow, 80
  • Jonathan K. Lai, Giacomo Busco, Elia Merzari and Yassin A. Hassan, 2019, "Direct Numerical Simulation of the Flow in a Bare Rod Bundle at Different Prandtl Numbers", Journal of Heat Transfer, 141, (12)
  • Ferry Roelofs, Heleen Uitslag-Doolaard, Daniele Dovizio, Blaz Mikuz, Afaque Shams, Fulvio Bertocchi, Martin Rohde, Julio Pacio, Ivan Di Piazza, Graham Kennedy, Katrien Van Tichelen, Aleks Obabko and Elia Merzari, 2019, "Towards validated prediction with RANS CFD of flow and heat transport in a wire-wrap fuel assembly", Nuclear Engineering and Design, 353
  • Javier Martínez, Yu Hsiang Lan, Elia Merzari and M. Min, 2019, "On the use of LES-based turbulent thermal-stress models for rod bundle simulations", International Journal of Heat and Mass Transfer, 142
  • Dillon R. Shaver, Lane B. Carasik, Elia Merzari, Nate Salpeter and Edward Blandford, 2019, "Calculation of Friction Factors and Nusselt Numbers for Twisted Elliptical Tube Heat Exchangers Using Nek5000", Journal of Fluids Engineering, Transactions of the ASME, 141, (7)
  • Giacomo Busco, Elia Merzari and Yassin A. Hassan, 2019, "Invariant analysis of the Reynolds stress tensor for a nuclear fuel assembly with spacer grid and split type vanes", International Journal of Heat and Fluid Flow, 77, pp. 144-156
  • Jonathan K. Lai, Elia Merzari and Yassin A. Hassan, 2019, "Sensitivity analyses in a buoyancy-driven closed system with high resolution CFD using Boussinesq approximation and variable density models", International Journal of Heat and Fluid Flow, 75, pp. 1-13
  • Elia Merzari, H. Yuan, A. Kraus, A. Obabko, P. Fischer, J. Solberg, S. Lee, J. Lai, M. Delgado and Y. Hassan, 2019, "High-Fidelity Simulation of Flow-Induced Vibrations in Helical Steam Generators for Small Modular Reactors", Nuclear Technology, 205, (1-2), pp. 33-47
  • Y. A. Hassan, A. Obabko, Elia Merzari, P. F. Fischer, N. Goth, Philip A Jones, D. T. Nguyen and R. Vaghetto, 2018, "Comparison of experimental and simulation results on interior subchannels of a 61-pin wire-wrapped hexagonal fuel bundle", Nuclear Engineering and Design, 338, pp. 130-136
  • A. Tomboulides, S. M. Aithal, P. F. Fischer, Elia Merzari, A. V. Obabko and D. R. Shaver, 2018, "A novel numerical treatment of the near-wall regions in the k-? class of RANS models", International Journal of Heat and Fluid Flow, 72, pp. 186-199
  • Nolan Goth, Philip A Jones, Thien Duy Nguyen, Rodolfo Vaghetto, Yassin Hassan, Nathaniel Salpeter and Elia Merzari, 2018, "PTV/PIV measurements of turbulent flows in interior subchannels of a 61-pin wire-wrapped hexagonal fuel bundle", International Journal of Heat and Fluid Flow, 71, pp. 295-304
  • Jonathan K. Lai, Elia Merzari and Yassin A. Hassan, 2018, "Large eddy simulation of the flow behavior in a simplified helical coil steam generator", Journal of Fluids Engineering, Transactions of the ASME, 141, (2)
  • Lorenz Hufnagel, Jacopo Canton, Ramis Örlü, Oana Marin, Elia Merzari and Philipp Schlatter, 2018, "The three-dimensional structure of swirl-switching in bent pipe flow", Journal of Fluid Mechanics, 835, pp. 86-101
  • S. Lomperski, A. Obabko, Elia Merzari, Paul E Fischer and W. D. Pointer, 2017, "Jet stability and wall impingement flow field in a thermal striping experiment", International Journal of Heat and Mass Transfer, 115, pp. 1125-1136
  • Haomin Yuan, Jerome Solberg, Elia Merzari, Adam Kraus and Iulian Grindeanu, 2017, "Flow-induced vibration analysis of a helical coil steam generator experiment using large eddy simulation", Nuclear Engineering and Design, 322, pp. 547-562
  • Landon Brockmeyer, Lane B. Carasik, Elia Merzari and Yassin Hassan, 2017, "Numerical simulations for determination of minimum representative bundle size in wire wrapped tube bundles", Nuclear Engineering and Design, 322, pp. 577-590
  • Vakhtang Makarashvili, Elia Merzari, Aleksandr Obabko, Andrew Siegel and Paul E Fischer, 2017, "A performance analysis of ensemble averaging for high fidelity turbulence simulations at the strong scaling limit", Computer Physics Communications, 219, pp. 236-245
  • Lambert H. Fick, Elia Merzari and Yassin A. Hassan, 2017, "Direct numerical simulation of pebble bed flows: Database development and investigation of low-frequency temporal instabilities", Journal of Fluids Engineering, Transactions of the ASME, 139, (5)
  • Y. Q. Yu, Elia Merzari, J. W. Thomas, A. Obabko and S. M. Aithal, 2017, "Steady and unsteady calculations on thermal striping phenomena in triple-parallel jet", Nuclear Engineering and Design, 312, pp. 429-437
  • Elia Merzari, Aleks Obabko, Paul E Fischer, Noah Halford, Justin Walker, Andrew Siegel and Yiqi Yu, 2017, "Large-scale large eddy simulation of nuclear reactor flows: Issues and perspectives", Nuclear Engineering and Design, 312, pp. 86-98
  • Adam Kraus, Elia Merzari, Tanju Sofu, Zhaopeng Zhong and Yousry Gohar, 2016, "CFD analysis and design of detailed target configurations for an accelerator-driven subcritical system", Nuclear Technology, 195, (2), pp. 157-168
  • Elia Merzari, Paul E Fischer, H. Yuan, K. Van Tichelen, S. Keijers, J. De Ridder, J. Degroote, J. Vierendeels, H. Doolaard, V. R. Gopala and F. Roelofs, 2016, "Benchmark exercise for fluid flow simulations in a liquid metal fast reactor fuel assembly", Nuclear Engineering and Design, 298, pp. 218-228
  • Yiqi Yu, Elia Merzari, Aleksandr Obabko and Justin Thomas, 2015, "A porous medium model for predicting the duct wall temperature of sodium fast reactor fuel assembly", Nuclear Engineering and Design, 295, pp. 48-58
  • Justin Walker, Elia Merzari, Aleksandr Obabko, Paul Fischer and Andrew Siegel, 2014, "Accurate prediction of the wall shear stress in rod bundles with the spectral element method at high Reynolds numbers", International Journal of Heat and Fluid Flow, 50, pp. 287-299
  • Vijay S. Mahadevan, Elia Merzari, Timothy Tautges, Rajeev Jain, Aleksandr Obabko, Michael Smith and Paul Fischer, 2014, "High-resolution coupled physics solvers for analysing fine-scale nuclear reactor design problems", Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 372, (2021)
  • M. Pellegrini, H. Endo, Elia Merzari and H. Ninokata, 2013, "Algebraic turbulent heat flux model for prediction of thermal stratification in piping systems", Nuclear Technology, 181, (1), pp. 144-156
  • Elia Merzari, W. D. Pointer, J. G. Smith, A. Tentner and P. Fischer, 2012, "Numerical simulation of the flow in wire-wrapped pin bundles: Effect of pin-wire contact modeling", Nuclear Engineering and Design, 253, pp. 374-386
  • Elia Merzari and H. Ninokata, 2011, "Proper orthogonal decomposition of the flow in a tight lattice rod-bundle", 241, (11), pp. 4621-4632
  • Elia Merzari, H. Ninokata, R. Mereu, E. Colombo and F. Inzoli, 2011, "Urans simulation of confined parallel jet mixing", Nuclear Technology, 175, (3), pp. 538-552
  • Elia Merzari, H. Ninokata, A. Mahmood and M. Rohde, 2009, "Proper orthogonal decomposition of the flow in geometries containing a narrow gap", Theoretical and Computational Fluid Dynamics, 23, (5), pp. 333-351
  • Sheng Wang, Hisashi Ninokata, Elia Merzari, Kangbin Lei, Xilian Luo, Luyi Lu and Kiwamu Kase, 2009, "Numerical study of a single blade row in turbomolecular pump", Vacuum, 83, (8), pp. 1106-1117
  • H. Ninokata, Elia Merzari and A. Khakim, 2009, "Analysis of low Reynolds number turbulent flow phenomena in nuclear fuel pin subassemblies of tight lattice configuration", Nuclear Engineering and Design, 239, (5), pp. 855-866
  • Elia Merzari and Hisashi Ninokata, 2009, "Anisotropic turbulence and coherent structures in eccentric annular channels", Flow, Turbulence and Combustion, 82, (1), pp. 93-120
  • Elia Merzari, Hisashi Ninokata, Sheng Wang and Emilio Baglietto, 2009, "Numerical simulation of free-surface vortices", Nuclear Technology, 165, (3), pp. 313-320
  • Elia Merzari, A. Khakim, H. Ninokata and E. Baglietto, 2009, "Toward an accurate approach for the prediction of the flow in a T-junction: URANS", 41, (9), pp. 1191-1204
  • Elia Merzari and Hisashi Ninokata, 2009, "Development of an LES methodology for complex geometries", 41, (7), pp. 893-906
  • Elia Merzari, Sheng Wang, Hisashi Ninokata and Vassilis Theofilis, 2008, "Biglobal linear stability analysis for the flow in eccentric annular channels and a related geometry", Physics of Fluids, 20, (11)
  • Elia Merzari, H. Ninokata and E. Baglietto, 2008, "Numerical simulation of flows in tight-lattice fuel bundles", Nuclear Engineering and Design, 238, (7), pp. 1703-1719

Conference Proceedings

  • Miwako Tsuji, Misun Min, Stefan Kerkemeier, Paul Fischer, Elia Merzari and Mitsuhisa Sato, 2022, "Performance tuning of the Helmholtz matrix-vector product kernel in the computational fluid dynamics solver Nek5000/RS for the A64FX processor", pp. 49-59
  • Victor Coppo Leite and Elia Merzari, 2021, "A new rans correction to account for varying viscosity effects", 1
  • David Reger, Elia Merzari, Paolo Balestra, Sebastian Schunert and Yassin A. Hassan, 2021, "Comparison of pebble bed velocity profiles between high-fidelity and intermediate-fidelity codes", 4
  • Carolina S.B. Dutra and Elia Merzari, 2021, "Study on laminar turbulent transition in square arrayed rod bundles", 4
  • Daniele Dovizio, Akshat Mathur, Giacomo Busco, Adam Kraus, Elia Merzari and Ed Komen, 2020, "DESIGN OF A DNS FOR A SIMPLIFIED PTS CASE WITH BUOYANCY EFFECTS", Proceedings of CFD4NRS-8
  • Adam Kraus, Elia Merzari, Thomas Noordiane and Sofiane Benchamadouche, 2020, "Invariant Analysis of Flow in a 5x5 Rod Bundle With a Central Thimble Tube"
  • Adam Kraus, Elia Merzari, Thomas Noordine, Oana Marin and Sofiane Benhamadouche, 2020, "Direct Numerical Simulation of Fluid Flow in a 5x5 Square Rod Bundle Using Nek5000"
  • Tri Nguyen and Elia Merzari, 2020, "COMPUTATIONAL FLUID DYNAMICS SIMULATION OF A SINGLE-PHASE RECTANGULAR THERMOSIPHON", Proceedings of ICONE 2020
  • Victor Coppo Leite and Elia Merzari, 2020, "The effect of varying viscosity in turbulent channel flow", Proceedings of FEDSM2020
  • N. Offermans, A. Peplinski, O. Marin, Elia Merzari and P. Schlatter, 2020, "Performance of preconditioners for large-scale simulations using nek5000", 134, pp. 263-272
  • Haomin Yuan, Elia Merzari, Yiqi Yu, Aleksandr Obabko, Mustafa A. Yildiz, Gerrit Botha and Yassin A. Hassan, 2019, "Applying tet-to-hex meshing method to complex nuclear reactor geometries for spectral element code", pp. 127-135
  • S. Lomperski, A. Obabko and Elia Merzari, 2019, "Buoyancy-driven transformations in a thermal striping flow field", pp. 3856-3864
  • F. Roelofs, H. Uitslag-Doolaard, B. Mikuz, D. Dovizio, D. de Santis, A. Shams, F. Bertocchi, M. Rohde, K. van Tichelen, S. Keijers, G. Kennedy, A. Batta, J. Pacio, P. Planquart, A. Obabko, L. Brockmeyer, Elia Merzari, R. Vaghetto, Y. Hassan, D. Leonard, M. Martin, B. Jackson, M. Steer, M. Delchini and D. Pointer, 2019, "CFD and experiments for wire-wrapped fuel assemblies", pp. 5716-5729
  • Prasad Vegendla, Adrian Tentner, Dillon Shaver, Aleks Obabko and Elia Merzari, 2019, "Development and validation of a conjugate heat transfer model for the two-phase CFD code NEK-2P", pp. 2666-2685
  • Jinyong Feng, Michael Acton, Emilio Baglietto, Adam R. Kraus and Elia Merzari, 2019, "Evaluation of turbulence modeling approaches for the prediction of cross-flow in a helical tube bundle", pp. 136-148
  • Yiqi Yu, Emily R. Shemon, Taek K. Kim and Elia Merzari, 2019, "Hot channel factor evaluation for sodium-cooled fast reactors with multi-physics sharp toolkit", pp. 6096-6109
  • R. Martineau, D. Andrs, R. Carlsen, D. Gaston, J. Hansel, F. Kong, A. Lindsay, C. Permann, A. Slaughter, Elia Merzari, Rui Hu, A. Novak and R. Slaybaugh, 2019, "Multiphysics for nuclear energy applications using a cohesive computational framework", pp. 3092-3106
  • S. Bhushan, M. Elmellouki, W. D. Jock, D. K. Walters, J. K. Lai, Y. A. Hassan, A. Obabko and Elia Merzari, 2019, "Numerical investigation of flow and heat transfer characteristics for attached and separated low-PR flows", 2
  • H. Dolfen, J. de Ridder, L. Brockmeyer, Elia Merzari, G. Kennedy, K. van Tichelen and J. Degroote, 2019, "Numerical simulations of the turbulence-induced vibrations of a wire-wrapped hexagonal fuel assembly", pp. 5092-5102
  • Javier Martínez and Elia Merzari, 2019, "On the use of small-scale LES for full-length heated fuel rod simulations", pp. 4755-4768
  • Adam Kraus, Yan Cao, Elia Merzari and Yousry Gohar, 2019, "Thermal hydraulic design of an accelerator driven subcritical system for burning minor actinides", pp. 220-233
  • Elia Merzari, 2019, "Toward exascale: Large eddy simulation and direct numerical simulation of nuclear reactor flows with the spectral element method", pp. 2064-2080
  • Jonathan K. Lai, Elia Merzari, Yassin A. Hassan and Aleksandr Obabko, 2019, "Validation and development of DNS database for low Prandtl numbers in rod bundle", 2
  • Aleksandr Obabko, Elia Merzari, Landon Brockmeyer, Paul Fischer, Tanju Sofu, Brian Jackson, Michael Steer, Rodolfo Vaghetto and Yassin A. Hassan, 2019, "Validation of NEK5000 for 37- And 61-pin wire-wrap geometries with conjugate heat transfer", pp. 2036-2049
  • Adrian Tentner, Prasad Vegendla, Ananias Tomboulides, Aleks Obabko, Elia Merzari and Dillon Shaver, 2018, "Advances in modeling critical heat flux in LWR boiling flows with the NEK-2P CFD code", 8
  • Landon Brockmeyer, Aleksandr Obabko, Elia Merzari and Yassin Hassan, 2018, "Analysis of pressure field on wire-wrapped pin bundle surface for concerns of FSI", 1
  • S. Bhushan, O. ElFajri, W. D. Jock, D. K. Walters, Jinping Lai, Y. A. Hassan, R. Brian Jackson, A. Obabko and Elia Merzari, 2018, "Assessment of RANS, LES, and hybrid RANS/LES models for the prediction of low-PR turbulent flows", 1
  • Dillon R. Shaver, Lane B. Carasik, Elia Merzari, Nate Salpeter and Edward Blandford, 2018, "Calculation of friction factors and nusselt numbers for twisted elliptical tube heat exchangers using nek5000", 2
  • Yiqi Yu, Elia Merzari and Jerome Solberg, 2018, "Coupled calculation on fluid structure interaction in plate-type fuel element", 8
  • Javier Martínez, Elia Merzari, Michael Acton and Emilio Baglietto, 2018, "Direct numerical simulation of the turbulent flow inside a differentially heated cavity", pp. 644-658
  • Adam R. Kraus, Haomin Yuan and Elia Merzari, 2018, "Evaluation of turbulence modeling approaches for cross-flow in a helical tube bundle", 8
  • Richard Martineau, David Andrs, Joshua Hansel, Cody Permann, Derek Gaston, Steve Novascone, Matthew Bernard, Russel Johns, Rui Hu, Elia Merzari, James Wolf, Hongbin Zhang and Ronaldo Szilard, 2018, "Extending the capability of nuclear plant systems analysis with advanced tightly-coupled nuclear fuels performance", 2018-May, pp. 1337-1339
  • Richard Martineau, David Andrs, Joshua Hansel, Cody Permann, Derek Gaston, Steve Novascone, Matthew Bernard, Russel Johns, Rui Hu, Elia Merzari, James Wolf, Hongbin Zhang and Ronaldo Szilard, 2018, "Extending the capability of nuclear plant systems analysis with advanced tightly-coupled nuclear fuels performance", 118, pp. 1337-1339
  • Jonathan K. Lai, Elia Merzari and Yassin A. Hassan, 2018, "Flow development with LES for cold leg mixing benchmark", 2018-May, pp. 1241-1244
  • Jonathan K. Lai, Elia Merzari and Yassin A. Hassan, 2018, "Flow development with LES for cold leg mixing benchmark", 118, pp. 1241-1244
  • Mustafa Alper Yildiz, Elia Merzari and Yassin A. Hassan, 2018, "Large eddy simulation of 5-tube bundle helical coil steam generator test section", 8
  • Haomin Yuan, Vakhtang Makarashvili, Elia Merzari, Aleksandr Obabko and Yiqi Yu, 2018, "Large eddy simulations of a coolant flow in spacer grid fuel assemblies with a spectral element solver", 8
  • Mustafa Alper Yildiz, Yassin Hassan, Haomin Yuan and Elia Merzari, 2018, "Numerical simulation of isothermal flow across slant five-tube bundle with spectral element method code NEK5000", pp. 659-669
  • Elia Merzari, Ronald Rahaman, Paul E Fischer and Misun Min, 2018, "Performance analysis of nek5000 for single-assembly calculations", 2
  • D. R. Shaver, A. Tomboulides, A. Tentner, P. Vegendla, Elia Merzari, N. Salpeter and W. D. Pointer, 2018, "Simulation of boiling two-phase flow in a helical coil steam generator using the spectral element code NEK-2P", pp. 263-276
  • Gerrit Botha, Richard C. Kurwitz, Yassin A. Hassan and Elia Merzari, 2018, "The influence of pebble placement on the wake of tandem pebbles in a free stream", 9
  • Jonathan K. Lai, Elia Merzari and Yassin A. Hassan, 2018, "Towards low Prandtl number investigations with direct numerical simulation in fuel bundles", 2018-May, pp. 1231-1233
  • Jonathan K. Lai, Elia Merzari and Yassin A. Hassan, 2018, "Towards low Prandtl number investigations with direct numerical simulation in fuel bundles", 118, pp. 1231-1233
  • Hee Cheon No and Elia Merzari, 2017, "Special issue on the 16th International Topical Meeting on Nuclear Reactor Thermal Hydraulics", 312, pp. 1
  • Philipp Schlatter, Lorenz Hufnagel, Jacopo Canton, Elia Merzari, Oana Marin and Ramis Orlu, 2017, "Swirl Switching in bent pipes studied by numerical simulation", 2
  • Philipp Schlatter, Azad Noorani, Jacopo Canton, Lorenz Hufnagel, Ramis Örlü, Oana Marin and Elia Merzari, 2017, "Transitional and turbulent bent pipes", 196, pp. 81-87
  • Dillon R. Shaver, Ananias Tomboulides, Aleksandr Obabko, Adrian Tentner, Prasad Vegendla and Elia Merzari, 2017, "Verification of the two-fluid model in the spectral element code Nek-2P for adiabatic flow conditions", 116, pp. 1251-1254
  • Dillon R. Shaver, Ananias Tomboulides, Aleksandr Obabko, Adrian Tentner, Prasad Vegendla and Elia Merzari, 2017, "Verification of the two-fluid model in the spectral element code Nek-2P for non-adiabatic flow conditions", 117, pp. 1645-1648
  • N. Goth, Philip A Jones, D. T. Nguyen, R. Vaghetto, Y. A. Hassan, A. Obabko, Elia Merzari and Paul F. Fischer, 2017, "Comparison of experimental and simulation results on interior subchannel of a 61-pin wire-wrapped hexagonal fuel bundle", 2017-September
  • Oana Marin, Elia Merzari, Aleks Obabko, Andres Alvarez, Stephen Lomperski and Paul E Fischer, 2017, "Geometry effects on thermal striping in nuclear reactors: POD analysis of large-eddy simulations and experiments", 1B-2017
  • Elia Merzari, H. Yuan, A. Kraus, A. Obabko, Paul E Fischer, J. Solberg, Saya Lee, Jinping Lai, S. H. Lee, M. Delgado and Y. Hassan, 2017, "High-fidelity simulation of flow-induced vibrations in helical steam generators for small modular reactors", 2017-September
  • Lambert H. Fick, Elia Merzari, Oana Marin and Yassin A. Hassan, 2017, "Investigation of the dynamics of incompressible flow in domains of multiple close-packed spheres", 1B-2017
  • Jonathan K. Lai, Elia Merzari, Marilyn Delgado, Samuel J. Lee, Saya Lee and Yassin A. Hassan, 2017, "Large eddy simulation of a helical coil steam generator test section", 1B-2017
  • Adrian Tentner, Prasad Vegendla, Ananias Tomboulides, Aleks Obabko, Elia Merzari and Dillon Shaver, 2017, "Modeling of two-phase boiling flow and critical heat flux with the NEK-2P CFD code", 8
  • L. H. Fick, Y. A. Hassan and Elia Merzari, 2017, "Numerical simulation of pebble bed flows using high-fidelity methods", 2017-September
  • L. B. Carasik, Elia Merzari and Y. A. Hassan, 2017, "Numerical simulation of twin jets using LES with the Nek5000 code", 116, pp. 1471-1474
  • Oana Marin, Elia Merzari, Philipp Schlatter and Andrew Siegel, 2017, "Proper orthogonal decomposition on compressed data", 1
  • Landon Brockmeyer, Jerome Solberg, Elia Merzari and Yassin Hassan, 2017, "Simulation of fluid-structure interaction of crossflow through a tube bundle and experimental validation", 1B-2017
  • Elia Merzari, Jerome Solberg, Paul E Fischer and Robert M. Ferencz, 2016, "A high-fidelity approach for the simulation of flow-induced vibration", 1A-2016
  • Vakhtang Makarashvili, Elia Merzari, Aleksandr Obabko, Paul E Fischer and Andrew Siegel, 2016, "Accelerating the high-fidelity simulation of turbulence: Ensemble averaging", 1B-2016
  • Lambert H. Fick, Elia Merzari and Yassin A. Hassan, 2016, "Calculation of turbulent kinetic energy budgets for flow through a pebble bed using DNS", 5
  • Landon Brockmeyer, Lane Carasik, Elia Merzari and Yassin Hassan, 2016, "CFD investigation of wire-wrapped fuel rod bundle inner subchannel behavior and dependency on bundle size", 5
  • Haomin Yuan, Elia Merzari and Yiqi Yu, 2016, "DNS study of supercritical CO2 flow using spectral element code Nek5000", 115, pp. 1661-1664
  • Jinping Lai, Elia Merzari, Saya Lee, M. Delgado, Saya Lee and Y. A. Hassan, 2016, "Large eddy simulations for a helical coil steam generator", 115, pp. 1665-1667
  • Aleksandr V. Obabko, Elia Merzari and Paul F. Fischer, 2016, "Nek5000 large-eddy simulations for thermal-hydraulics of deformed wire-wrap fuel assemblies", 115, pp. 1491-1494
  • Michael A. Sprague, Stanislav Boldyrev, Choong Seock Chang, Paul E Fischer, Ray Grout, William I. Gustafson, Jeffrey A.F. Hittinger, Elia Merzari and Robert Moser, 2016, "Outcomes from the DOE workshop on turbulent flow simulation at the exascale"
  • Dillon R. Shaver, Prasad Vegendla, W. David Pointer, Adrian M. Tentner and Elia Merzari, 2016, "Simulation of boiling flow in a helical coil using a homogeneous equilibrium model with the Nek-2P CFD code", 115, pp. 1771-1774
  • Adam Kraus, Haomin Yuan and Elia Merzari, 2016, "Simulations of a helical tube bundle in cross-flow for application to flow-induced vibration", 115, pp. 1668-1671
  • John Mulloy, Elia Merzari, Oana Marin and Yassin Hassan, 2016, "Toward linear stability analysis of upper plenum flows", 115, pp. 1435-1438
  • L. Brockmeyer, L. Carasik, Elia Merzari and Y. Hassan, 2016, "Wire-wrapped fuel pin effect of bundle size on temperature distribution for uniform heat flux", 114, (1), pp. 888-890
  • G. Damiani, D. Rosa, A. Shams, E. M.J. Komen, Elia Merzari, A. Obabko and Paul E Fischer, 2015, "Calibration and optimization of pressurized thermal shock for benchmarking direct numerical simulation", 5, pp. 4153-4166
  • H. J. Doolaard, A. Shams, F. Roelofs, K. Van Tichelen, S. Keijers, J. De Ridder, J. Degroote, J. Vierendeels, I. Di Piazza, R. Marinari, Elia Merzari, A. Obabko and Paul E Fischer, 2015, "CFD benchmark for a heavy liquid metal fuel assembly", 3, pp. 2196-2208
  • L. M. Brockmeyer, F. S. Sarikurt, Y. A. Hassan and Elia Merzari, 2015, "CFD investigation of wire-wrapped fuel rod bundles and flow sensitivity to bundle size", 8, pp. 6678-6691
  • Lambert Fick, Elia Merzari and Yassin Hassan, 2015, "Direct numerical simulation of the flow through a structured pebble bed near a wall boundary", 1
  • Haomin Yuan and Elia Merzari, 2015, "Direct numerical simulation of turbulent channel flow with heat transfer for low Prandtl and high Reynolds and comparison with Algebraic heat flux model", 1
  • L. H. Fick, Elia Merzari and Y. A. Hassan, 2015, "Direct numerical simulation of turbulent flow in the near wall region of a pebble bed", 112, pp. 947-950
  • A. Kraus, S. Aithal, A. Obabko, Elia Merzari, A. Tomboulides and Paul E Fischer, 2015, "Erosion of a large-scale gaseous stratified layer by a turbulent jet - Simulations with URANS and LES approaches", 2, pp. 1448-1461
  • Elia Merzari, Aleks Obabko, Paul E Fischer, Noah Halford, Justin Walker, Andrew Siegel and Yiqi Yu, 2015, "Large-scale simulation of nuclear reactors: Issues and perspectives", 1, pp. 280-297
  • Elia Merzari, Paul E Fischer and Justin Walker, 2015, "Large-scale simulation of rod bundles: Coherent structure recognition and stability analysis", 1
  • Adrian Tentner, Prasad Vegendla, Aleks Obabko, Ananias Tomboulides, Paul E Fischer, Oana Marin and Elia Merzari, 2015, "Modeling of two-phase flow in a BWR fuel assembly with a highly-scalable CFD code", 3, pp. 1966-1979
  • Y. Q. Yu, Elia Merzari, J. W. Thomas and A. Obabko, 2015, "Steady and unsteady calculations on thermal striping phenomena in triple-parallel jet", 2, pp. 1435-1447
  • Aleksandr Obabko, Paul E Fischer, Oana Marin, Elia Merzari and Dave Pointer, 2015, "Verification and validation of nek 5000 for T-junction, matis, SIBERIA, and max experiments", 2, pp. 1462-1473
  • Y. Cao, Y. Gohar, Elia Merzari and A. R. Kraus, 2015, "Conceptual designs of accelerator-drive subcritical system for burning minor actinides", pp. 223-228
  • Zhaopeng Zhong, Yousry Gohar, Elia Merzari, Adam Kraus and Tanju Sofu, 2015, "Target design optimization of kipt neutron source facility", pp. 278-285
  • A. Tomboulides, S. M. Aithal, P. F. Fischer, Elia Merzari and A. Obabko, 2014, "A novel variant of the K- ? Urans model for spectral element methods - implementation, verification and validation in NEK5000", 1D
  • Adrian Tentner, Elia Merzari and Prasad Vegendla, 2014, "Computational fluid dynamics modeling of two-phase boiling flow and critical heat flux", 4
  • Yan Cao, Yousry Gohar, Elia Merzari and Adam R. Kraus, 2014, "Conceptual design of an accelerator-driven subcritical system to dispose the minor actinide fuels", 111, pp. 1320-1322
  • P. Ward, Y. Hassan, Elia Merzari and P. Fischer, 2014, "Direct numerical simulation and linear stability analysis of the flow in a pebble bed", 1C
  • S. Bhushan, D. K. Walters, Elia Merzari and A. Obabko, 2014, "Implementation and validation of a hybrid RANS/LES model in the spectral element solver NEK5000", 1A
  • Yiqi Yu, Elia Merzari and J. Thomas, 2014, "SFR duct wall temperature prediction with a porous medium model", 111, pp. 1651-1653
  • Adam Kraus, Elia Merzari, Yan Cao and Yousry Gohar, 2014, "Thermal-hydraulic core design concept of an accelerator-driven minor actinide burner", 111, pp. 1437-1439
  • Adam R. Kraus, Elia Merzari and Paul F. Fischer, 2014, "Turbulent flow-field comparisons of RANS and les for a twisted pin lattice geometry at low Reynolds number", 1A
  • Elia Merzari and Paul Fischer, 2013, "Controlling turbulence in tight rod bundles", 1 B
  • V. Mahadevan, Elia Merzari, R. Jain, A. Obabko, M. Smith, T. Tautges, P. Fischer, W. D. Pointer and R. Ferencz, 2013, "Sharp fuel assembly coupled simulation demonstrations", 109, (PART 1), pp. 774-778
  • A. Dave, R. Hu, A. Manera, Elia Merzari and W. D. Pointer, 2012, "CFD simulations of NSTF", 107, pp. 1323-1326
  • Elia Merzari, Paul Fischer, W. David Pointer, Marco Pellegrini and Hisashi Ninokata, 2012, "On the interaction of boundary layer and mixing layer in stratified pipe flow", 1, (PARTS A AND B), pp. 767-773
  • Elia Merzari, Paul Fischer and W. David Pointer, 2012, "Optimal disturbances in three-dimensional natural convection flows", 1, (PARTS A AND B), pp. 921-928
  • S. Lomperski, Elia Merzari, A. Obabko, W. D. Pointer and P. Fischer, 2012, "The MAX facility for CFD code validation", 3, pp. 1873-1879
  • Elia Merzari and Yousry Gohar, 2012, "Numerical simulation of a completely passive spent fuel pool: Lessons learned", 4, (1), pp. 553-561
  • Elia Merzari, W. David Pointer and Paul Fischer, 2011, "A POD-based solver for the advection-diffusion equation", 1, (PARTS A, B, C, D), pp. 1139-1147
  • Elia Merzari, Paul Fischer and Hisashi Ninokata, 2011, "Numerical simulation of the flow in a toroidal thermosiphon", 1, (PARTS A, B, C, D), pp. 1549-1560
  • Elia Merzari, Tanju Sofu, Zhaopeng Zhong and Yousry Gohar, 2011, "Safety analisys of the target design with electron accelerator", pp. 282-289
  • Elia Merzari, Z. Zhong and Y. Gohar, 2011, "Safety analysis of KIPT sub-critical assembly", 105, pp. 940-941
  • Elia Merzari, J. G. Smith and W. D. Pointer, 2010, "Hydrodynamic analysis of different spacing strategies for a tight-lattice SFR bundle", 103, pp. 860-861
  • Elia Merzari, W. D. Pointer, A. Obabko and P. Fischer, 2010, "On the numerical simulation of thermal striping in the upper plenum of a fast reactor", 1, pp. 595-603
  • Elia Merzari, W. D. Pointer and P. Fischer, 2010, "Proper Orthogonal Decomposition of the flow in a T-junction", 3, pp. 1714-1721
  • A. Khakim, Elia Merzari and H. Ninokata, 2009, "Feasibility study of the application of exotic pin for tight-lattice fuel assembly", 100, pp. 747
  • Elia Merzari and Hisashi Ninokata, 2009, "URANS simulation of parallel jets mixing in a rectangular confinement", 100, pp. 681-682
  • Rui Li, Elia Merzari and Hisashi Ninokata, 2009, "Numerical study on liquid droplet impingement erosion in BWRs", 101, pp. 863-864
  • Elia Merzari and Hisashi Ninokata, 2009, "Priori test of the flow in an annular channel with differential heating at the walls", 1, (PART A), pp. 743-751
  • Sheng Wang, Kangbin Lei, Xilian Luo, Kiwamu Kase, Elia Merzari and Hisashi Ninokata, 2009, "Simulation of eccentric-shaft journal microbearing by DSMC", 1, (PART C), pp. 2331-2340
  • Riccardo Mereu, Emanuela Colombo, Fabio Inzoli, Elia Merzari and Hisashi Ninokata, 2009, "Large eddy simulation of confined parallel jets", 101, pp. 940-941
  • Elia Merzari, Azizul Khakim and Hisashi Ninokata, 2009, "Large eddy simulation of the flow in tight-lattice rod bundles at low Reynolds number", 1, (PART C), pp. 2277-2284
  • Sheng Wang, Kangbin Lei, Xilian Luo, Kiwamu Kase, Elia Merzari and Hisashi Ninokata, 2009, "Cylindrical Couette flow of a rarefied gas from macro- to micro-scales", 2, pp. 469-475
  • Elia Merzari, 2009, "DNS simulation of buoyancy-driven flows for nuclear applications", 101, pp. 1141-1142
  • Elia Merzari, H. Ninokata and I. C. Bang, 2009, "Numerical simulation of the flow in a natural circulation loop with nanofluids and differential heating", 2, pp. 1546
  • Elia Merzari, H. Ninokata and E. Baglietto, 2009, "Large eddy simulation of the flow in A T-junction", 2, pp. 1538
  • Elia Merzari, H. Ninokata and E. Baglietto, 2008, "Detached eddy simulation and large eddy simulation models for the simulation of gas entrainment", 5, pp. 2669-2677
  • Elia Merzari and H. Ninokata, 2008, "Test of large eddy simulation sub-grid-scale models for flows in annular channels", 1, pp. 410-420
  • Hisashi Ninokata and Elia Merzari, 2007, "Computational fluid dynamics and simulation-based-design approach for tight lattice nuclear fuel pin subassemblies"
  • Elia Merzari and H. Ninokata, 2007, "Development of an les methodology for complex geometries"
  • Elia Merzari and H. Ninokata, 2007, "Toward a dynamical systems approach for the understanding of turbulent flow pulsations between subchannels"
  • Elia Merzari, H. Ninokata and E. Baglietto, 2007, "Unsteady Reynolds Averaged Navier-Stokes simulation for an accurate prediction of the flow inside tight rod bundles"
  • Tsunayuki Okumura, Elia Merzari and Hisashi Ninokata, 2006, "Direct numerical simulation of turbulent flows in an eccentric annulus channel", 95, pp. 825-826

Other

  • Elia Merzari, Sama Bilbao y Leon, Sofiane Benhamadouche, John Luxat and Xu Cheng, 2020, "Foreword: Selected papers from the 2018 International Topical Meeting on Advances in Thermal Hydraulics (ATH 2018)", Nuclear Technology, 206, (2), pp. iii-iv
  • John Luxat, Xu Cheng, Sofiane Benhamadouche, Sama Bilbao-y-Leon and Elia Merzari, 2018, "Foreword"
  • Fan Bill Cheung, Michio Murase, David Aumiller, Seungjin Kim, Simon Walker, Elia Merzari and Xiaojing Liu, 2016, "International Topical Meeting on Advances in Thermal Hydraulics 2016, ATH 2016: Foreword", pp. xiii
  • Nam Dinh, Hee Cheon No, Xiaodong Sun, Sama Bilbao Leon, Elia Merzari and W. David Pointer, 2015, "Foreword", 1
  • Kurshad Muftuoglu, Jong H. Kim, Donna Post Guillen, Horst Michael Prasser, Seungjin Kim and Elia Merzari, 2014, "Foreword"
  • Elia Merzari, H. Ninokata and E. Baglietto, 2009, "Corrigendum to "Numerical simulation of flows in tight-lattice fuel bundles" [Nuclear Engineering and Design 238 (2008) 1703-1719] (DOI:10.1016/j.nucengdes.2008.01.001)", Nuclear Engineering and Design, 239, (3), pp. 611

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About

The Ken and Mary Alice Lindquist Department of Nuclear Engineering at Penn State is one of the top ranked nuclear engineering programs in the United States. The department distinguishes itself with a strong focus on experimental research. The actively growing department leads four educational programs for students pursuing a bachelor of science, a master of science, a master of engineering, or a doctoral degree. The Radiation Science and Engineering Center (RSEC) facilities, including the Breazeale Reactor, are available to nuclear engineering faculty and students at Penn State for research and instruction. RSEC houses the Breazeale Nuclear Reactor, the country’s first and longest operating licensed nuclear research reactor. Having access to an operating research reactor is a key strength for the department and enables Penn State to harness research and educational opportunities that are unique in the United States. See how we’re inspiring change and impacting tomorrow at nuce.psu.edu.

Department of Nuclear Engineering

206 Hallowell Building

The Pennsylvania State University

University Park, PA 16802-4400

Phone: 814-863-6222