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 across 200 trillion grid points on OLCF Frontier and LLNL El Capitan.
Check out our papers to learn more.
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
April 8, 2026
New preprint on shocks without shock capturing, an IGR-based approach to compressible flows. Work by group Ph.D. students Anand Radhakrishnan and Benjamin Wilfong, in collaboration with Florian Schäfer (Courant Institute).
April 4, 2026
Our paper on the performance of sharply bent acoustic resonators at high sound levels is published in the AIAA Journal. Collaboration with K. Ahuja’s group.
April 4, 2026
Our paper on hierarchical Bayesian constitutive model selection for high-strain-rate soft material characterization is published in Soft Matter. Collaboration with the Rodriguez, Estrada, and Yang groups.
March 31, 2026
The group receives a compute allocation through the AMD University Program AI & HPC Cluster (1550 node-hours, MI300X and MI350X 8-way GPU nodes).
March 31, 2026
Group undergraduate Melody Lee wins the Barry Goldwater Scholarship. Congratulations, Melody!
March 22, 2026
Our paper on hardware-accelerated phase-averaging for cavitating bubbly flows, a collaboration with Aswin Gnanaskandan and Diego Vaca-Revelo of WPI, is published in the International Journal of Multiphase Flow.
March 16, 2026
We are at the APS March Meeting in Denver this week. Spencer is presenting on Shocks without tracking or capturing at exascale, and Zhixin Song is presenting on Efficient Reconstruction for Real-Valued Quantum States.
March 12, 2026
Spencer is giving a seminar at the University of Tennessee Space Institute on the simulation of many-engine rocket boosters.
March 11, 2026
Spencer is giving a seminar at Oak Ridge National Laboratory on benchmarking scientific workloads and the scientific use of exascale machines in practice.
March 4, 2026
Spencer is presenting Compressible Flow with a Free Lunch: Simulating 1 Quadrillion Degrees of Freedom Via Regularization Without Loss of Accuracy at SIAM PP26 this week in Berlin, Germany.
