Publications

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Papers

Development of MOSCATO: A CFD-Level Electrochemistry and Corrosion Simulator for Molten Salt Systems [DOI] (Nucl. Sci. Eng., 2026) Haomin Yuan, Y. Lan, M. Min, D. Dai, D. Shaver, J. Acierno, M. Seneca, E. Merzari, S. Tutwiler, L. Carasik, N. Hoyt
Free Lunch in In Situ Visualization: Leveraging Idle CPU Resources to Mitigate GPU Contention [DOI]
(IEEE LDAV, 2025) V. Mateevitsi [et al. including Y. Lan]
Toward Modeling of Fusion Fluid Blanket Flows Using the Spectral Element Method [DOI]
(ASME FEDSM, 2025) L. Hiland, T. Nguyen, C. Dutra, E. Merzari, D. Buta, A. Dubas, A. Davis, Y. Lan, M. Min, P. Fischer
Large Eddy Simulation of TALL-3D Facility Using Spectral Element Method [DOI]
(ASME FEDSM, 2025) T. Nguyen, E. Merzari, Y. Lan
A Study of the Transition to Turbulence in a Bed of 67 Spherical Pebbles [DOI]
(Flow, Turbulence and Combustion, 2025) D. Reger, E. Merzari, T. Nguyen, Y. Lan, P. Fischer, Y. Hassan
Nek5000/RS performance on advanced GPU architectures [DOI]
(Front. High Perform. Comput., 2025) M. Min, Y. Lan, P. Fischer, T. Rathnayake, J. Holmen
Visuals on the House: Optimizing HPC Workflows with No-Cost CPU Visualization [DOI]
(IEEE LDAV, 2024) V. Mateevitsi, A. Sewell, M. Bode, P. Fischer, J. Göbbert, J. Insley [et al. including Y. Lan]
Exascale Multiphysics Nuclear Reactor Simulations for Advanced Designs [DOI]
(SC23, ACM Gordon Bell Finalist) E. Merzari, S. Hamilton, T. Evans, M. Min, P. Fischer, S. Kerkemeier, J. Fang, P. Romano, Y. Lan, M. Phillips, E. Biondo, K. Royston, T. Warburton, N. Chalmers, T. Rathnayake
Scaling Computational Fluid Dynamics: In Situ Visualization of NekRS using SENSEI [DOI]
(SC23, ISAV23) V. Mateevitsi, M. Bode, N. Ferrier, P. Fischer, J. Göbbert, J. Insley, Y. Lan, M. Min, M. Papka, S. Patel, S. Rizzi, J. Windgassen
Optimization of Full-Core Reactor Simulations on Summit [arXiv]
(SC22) M. Min, Y. Lan, P. Fischer, E. Merzari, S. Kerkemeier, M. Phillips, T. Rathnayake, A. Novak, D. Gaston, N. Chalmers, T. Warburton
NekRS, a GPU-accelerated spectral element Navier–Stokes solver [DOI]
(Parallel Comput. 2022) P. Fischer, S. Kerkemeier, M. Min, Y. Lan, M. Phillips, T. Rathnayake, E. Merzari, A. Tomboulides, A. Karakus, N. Chalmers, T. Warburton
Pressure Drop Correlation Improvement for the Near-Wall Region of Pebble-Bed Reactors [DOI]
(Nucl. Technol. 2022) D. Reger, E. Merzari, P. Balestra, S. Schunert, Y. Hassan, H. Yuan, Y. Lan, P. Fischer, M. Min
GPU Algorithms for Efficient Exascale Discretizations [DOI]
(Parallel Comput. 2021) T. Kolev, P. Fischer, M. Min, [et al. including Y. Lan]
Efficient exascale discretizations: High-order finite element methods [DOI]
(Int. J. High Perform. Comput. Appl. 2021) T. Kolev, P. Fischer, M. Min, [et al. including Y. Lan]
Cardinal: A lower length-scale multiphysics simulator for pebble bed reactors [DOI]
(Nucl. Technol. 2021) E. Merzari, H. Yuan, M. Min, D. Shaver, R. Rahaman, P. Shriwise, P. Romano, A. Talamo, Y. Lan, D. Gaston, R. Martineau, P. Fischer, Y. Hassan
Feasibility of full-core pin resolved CFD simulations of small modular reactor with momentum sources [DOI]
(Nucl. Eng. Des. 2021) J. Fang, D. Shaver, A. Tomboulides, M. Min, P. Fischer, Y. Lan, R. Rahaman, P. Romano, S. Benhamadouche, Y. Hassan, A. Kraus, E. Merzari
All-Hex Meshing Strategies for Densely Packed Spheres [DOI]
(29th International Meshing Roundtable, 2021) Y. Lan, P. Fischer, and M. Min
On the use of LES-based turbulent thermal-stress models for rod bundle simulations [DOI]
(Int. J. Heat Mass Transf. 2019) J. Martńez, Y. Lan, E. Merzari, M. Min

Technical Reports

ANL MCS Report: Nek5000/RS Performance on Advanced GPU Architectures [DOI]
(ANL-22/81, 2022) M. Min, Y. Lan, P. Fischer, T. Rathnayake, J. Holmen
CEED ECP Milestone Report: Improve performance and capabilities of CEED-enabled ECP applications on Frontier/Aurora EA [DOI]
(CEED-MS39, 2022) T. Kolev, P. Fischer, [et al. including Y. Lan]
CEED ECP Milestone Report: High-order algorithmic developments and optimizations for more robust exascale applications [DOI]
(CEED-MS38, 2022) T. Kolev, P. Fischer, [et al. including Y. Lan]
CEED ECP Milestone Report: Port and optimize the CEED software stack to Aurora / Frontier EA Systems [DOI]
(CEED-MS37, 2021) T. Kolev, P. Fischer, [et al. including Y. Lan]
CEED ECP Milestone Report: High-order algorithmic developments and optimizations for large-scale GPU-accelerated simulations [DOI]
(CEED-MS36, 2021) T. Kolev, P. Fischer, [et al. including Y. Lan]
CEED ECP Milestone Report: Support CEED-enabled ECP applications in their preparation for Aurora/Frontier [DOI]
(CEED-MS35, 2020) T. Kolev, P. Fischer, [et al. including Y. Lan] (47 pages, a full version including NDA section)
CEED ECP Milestone Report: Improve performance and capabilities of CEED-enabled ECP applications on Summit/Sierra [DOI]
(CEED-MS34, 2020) T. Kolev, P. Fischer, [et al. including Y. Lan]
CEED ECP Milestone Report: Performance tuning of CEED software and 1st and 2nd wave apps [DOI]
(CEED-MS32, 2019) T. Kolev, P. Fischer, [et al. including Y. Lan]
ANL NEAMS Report: Nek5000 enhancements for faster running analysis [DOI]
(ANL MCS-TM-384, 2019) M. Min, A. Tomboulides, P. Fischer, E. Merzari, D. Shaver, J. Martinez, H. Yuan, Yu-Hsiang Lan
CEED ECP Milestone Report: Engage second wave ECP/CEED applications [DOI]
(CEED-MS23, 2019) T. Kolev, P. Fischer, [et al. including Y. Lan]

Presentations

Speaker, NekRS Development: h-refinement, MHD V&V, and Exascale Visualization, Nek5000 Users Meeting, Virginia Commonwealth University, Aug. 5–7, 2025.
Speaker, Low-Order Preconditioning for SEM-Based Advection-Diffusion Problems, North American High Order Methods Conference (NAHOMCon2024), Dartmouth College, Jun. 17–19, 2024
Speaker, Low-order Preconditioner for Steady State Advection Diffusion Equation Under Spectral Element Discretization, 18th Copper Mountain Conference On Iterative Methods, Copper Mountain, CO, Apr. 14–19, 2024
Speaker, Exascale Computing for Thermal Fluid Applications, SIAM Conference on Computational Science and Engineering (CSE23), Amsterdam, The Netherlands, Feb. 26–Mar. 3, 2023.
Speaker, Spectral Element Simulations for Densely Packed Spheres, Nek5000 Users Meeting, University of Illinois Urbana Champaign, Illinois, Aug. 12–13, 2022
Speaker, Spectral Element Simulations for Packed Beds, The 2nd North American High Order Methods Conference, San Diego State University, California, Jul. 19-20, 2022.
Speaker, All-Hex Meshing Strategies for Densely Packed Spheres, 29th International Meshing Roundtable, June 21-25, 2021 (Virtual meeting).
Speaker, All-Hex Meshing for Simulations of Turbulence in Spherical Beds, SIAM Conference on Computational Science and Engineering (CSE21), March 1-5, 2021 (Virtual meeting)
Poster (invited), Pebble-Bed Reactor Simulations with All-Hex Meshing Strategies for Densely Packed Spheres Advanced Simulation Workshop, Argonne National Laboratory, Feb. 28, 2020.
Speaker, Recent Advances in High-order Simulations for Electromagnetics SIAM Conference on Computational Science and Engineering (CSE19), Spokane, May 1, 2019.
Poster, High Performance Computation of Poisson-Nernst-Planck Type Equations and The Simulation of Ion Transport Trough KcsA Channels Taiwan Society for Industrial and Applied Mathematis (TWSIAM), Taipei, Taiwan, May 26–27, 2018
Speaker, Ion Channels and Transporters, Mini-workshop on Mathematical Modeling and Computer Simulation for Transmembrane Proteins, Feng-Chia University, Taiwan, May 20, 2018.
Speaker (invited), High-Performance Multiphysics Simulations for Ion Channels SIAM Conference on Parallel Processing for Scientific Computing (PP18), Tokyo, Japan, March 7–10, 2018.
Speaker, Numerical Methods of Poisson-Nernst-Planck Based Models with Parallel Implementation and Applications, The 9th Taiwan-Japan Joint Workshop for Young Scholars in Applied Mathematics, National Cheng Kung University, Taiwan, March 3–5, 2018.
Co-lecturer, Mini-Course on NekCEM–a Numerical PDE Solver, National Center for Theoretical Sciences, National Taiwan University, Taiwan, Jan. 31–Feb. 6, 2018. [Webpage]
Speaker, Spectral Element Simulations for Charge Transport in Ion Channels Using NekCEM, Summer Argonne Students’ Symposium (SASSy), Mathematics and Computer Science Division, Argonne National Laboratory, Jul. 28, 2017.