Welcome!
We’re the Computational Physics Group at Georgia Tech. We build numerical methods, computational models, and open-source software for problems in defense, energy, and medicine — optimized for the world’s largest supercomputers.
Research areas:
2025 Gordon Bell Prize Finalist In August 2025 we ran the largest CFD simulation ever — 1 quadrillion DOFs / 200T grid points on OLCF Frontier and LLNL El Capitan.
Thinking about joining the group?
We’re always looking for new Ph.D. and undergraduate students who like building models, algorithms, and software.
- Strong coding + numerics background is a plus
- Projects span exascale CFD, cavitation, microfluidics, and more
Visit the Vacancies page for detailed instructions.
What strong applicants usually have: Experience with C/C++/Fortran, numerical methods, and HPC. Familiarity with CFD, continuum mechanics, or scientific computing is helpful but not required.
Examples of our work
Exascale multiphase flow: Scale-resolving simulation of a multi-rocket-booster configuration via MFC and information geometric regularization (IGR), developed with Florian Schäfer. Record-setting at 1 quadrillion DOFs (200T grid points) on OLCF Frontier (viz. via Ph.D. student Ben Wilfong).
Interested in using MFC?
MFC is our flagship open-source solver for compressible multiphase flow at exascale.
• GPU-optimized for AMD and NVIDIA
• Validated on rocket, cavitation, and bubbly-flow problems
• Actively maintained and used on OLCF Frontier and LLNL El Capitan
Visit the MFC website or the GitHub repo to get started.
Many of the techniques used in our record-setting rocket simulations are available in MFC, so external users can reproduce similar workflows on their own clusters.
Cell-scale flow in microfluidics: High-fidelity spectral boundary integral simulation of blood cells transitioning to chaos. We developed stochastic models enabling microfluidic device design and improved treatment outcomes. Above: a microaneurysm (viz. via student Suzan Manasreh).
News
August 4, 2026
New preprint on a discontinuous Galerkin discretization of information geometric regularization, stabilizing shocks without limiters or artificial viscosity. Led by Brook Eyob, a Ph.D. student with Prof. Florian Schäfer (NYU), and group Ph.D. student Jesus Arias.
August 3, 2026
New preprint on coupled Rayleigh-Taylor and Faraday instabilities in vibrated cylinders, and how confinement decides which mechanism wins. Led by postdoc Dr. Tianyi Chu with Ph.D. student Ben Wilfong, with Tim Koehler and Ryan McMullen at Sandia.
July 30, 2026
Group Ph.D. student Anand Radhakrishnan defends his dissertation on multiphase compressible flow simulation. Congratulations, Dr. Radhakrishnan! He heads to NVIDIA.
July 29, 2026
New preprint on a sub-grid-scale model for polydisperse bubbly flows with heat and mass transfer at the bubble wall. Led by group Ph.D. student Anand Radhakrishnan and implemented in MFC.
July 29, 2026
Our paper on fourth-order HyQMOM closures for 2D and 3D kinetic equations is accepted to the Journal of Computational Physics. With Rodney Fox (Iowa State) and Frédérique Laurent (CNRS, CentraleSupélec).
July 25, 2026
Group Ph.D. students Anand Radhakrishnan and Benjamin Wilfong’s paper on shocks without shock capturing is published in CMAME, with Prof. Florian Schäfer (NYU).
July 25, 2026
Group alum Dr. Haocheng Yu’s paper on sound leakage through ill-fitting earplugs is in press at the International Journal of Aeroacoustics.
July 25, 2026
Group alum Dr. Haocheng Yu and group postdoc Dr. Tianyi Chu’s paper on energy dissipation in an acoustically-driven slit is in press at the Journal of Fluid Mechanics.
July 24, 2026
Spencer is speaking at the next OLCF User Conference Call on CFD at one quadrillion degrees of freedom, using unified memory and mixed-precision numerics to simulate compressible flow at 200 trillion grid points on OLCF Frontier.
July 2, 2026
Our paper on Hadamard random forests, which reconstruct real-valued quantum states with exponentially fewer measurement settings, is published in Communications Physics (Nature Portfolio). Congrats to group alum Dr. Zhixin (Jack) Song (now at QuEra) and undergraduate Melody Lee, with collaborators Hang Ren (Berkeley), Bryan Gard (GTRI), and Nicolas Renaud (Netherlands eScience Center).
