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<h2 id="welcome">Welcome!</h2>
<p>Nano-scale transistors fill warehouse-scale supercomputers, yet their performance still constrains development of the jets that defend us, the medical therapies our lives depend upon, and the renewable energy sources that will power our generation into the next.
The <strong>Computational Physics Group at Georgia Tech</strong> develops computational models and numerical methods to push these applications forward.
We accompany our methods with algorithms crafted to make efficient use of the latest exascale machines and computer architectures, including AMD GPUs, Arm/RISC CPUs, and quantum computers.
We develop <a href="/software/" target="_blank">open-source software</a> for these methods that scales to the world’s largest supercomputers.
Check out the rest of this website to learn more.</p>
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<h5>PI: Spencer Bryngelson</h5>
<h6><i>Assistant Professor</i><br /> College of Computing, CSE<br /> College of Engineering, AE/ME<br />Georgia Tech</h6>
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<p><strong>Openings? Visit <a href="/vacancies.html">this page</a> if you’re interested in joining our group.</strong></p>
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<h2>Examples of our work</h2>
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<p>Bubble cavitation and droplet shedding are fundamental multiphase flow problems at the core of naval hydrodynamics, aerospace propulsion, and more.
We developed a <a href="/papers/charalampopoulos-RSA-21.pdf" target="_blank">sub-grid method</a> for simulating these phenomena.
<a href="https://mflowcode.github.io/" target="_blank">MFC</a>, our open-source exascale-capable multi-phase flow solver, demonstrates such scale-resolving simulation of a shock-droplet interaction in the above video (via Ph.D. student Ben Wilfong).</p>
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<p>The spectral boundary integral method leads to <a href="/papers/bryngelson-PRF-18.pdf" target="_blank">high-fidelity prediction and analysis</a> of blood cells transitioning to chaos in a microfluidic device. This method of simulation provides resolution of strong cell membrane deformation with scant computational resources.
We developed a <a href="/papers/bryngelson-PRE-19.pdf" target="_blank">stochastic model</a> for the cell-scale flow, enabling microfluidic device design and improving treatment outcomes.
The video above shows a microaneurysm (simulated by Suzan Manasreh).</p>
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<h2>News</h2>
<p><b>28 January, 2025</b>
Spencer is at PNNL, a DOE lab., this week. He is giving a seminar on solving PDEs with quantum devices. Thank you <a href="https://www.pnnl.gov/science/staff/staff_info.asp?staff_num=10102">Xianyu Li</a> and <a href="https://home.uni-leipzig.de/~jmuelmen/index.html">Johannes Muelmenstaedt</a> for the kind invitation!</p>
<p><b>27 January, 2025</b>
In exascale supercomputing news, our group was granted a DAT (dedicated access time) for 100% of LLNL El Capitan (40K+ GPUs) for one day. This time was used to measure the performance of <a href="https://mflowcode.github.io/">MFC</a>, our flagship open source solver, and evaluate the readiness of the El Capitan system before it moves to the classified network. Further, our OLCF Frontier allocation was renewed into FY25. Our work with the JSC JUPITER team continues, who manage Europe’s first exascale supercomputer and early access systems.</p>
<p><b>8 January, 2025</b>
The <a href="https://arxiv.org/abs/2302.04227" target="_blank">pIMR</a> manuscript appears on arXiv! We devise a parsimonious scheme for high-fidelity material inference that cuts the cost of experimentation or simulation by two orders of magnitude. With this, we enable material characterization in tractable time. In collaboration with Michigan, Brown, and UT Austin.</p>
<p><b>28 November, 2024</b>
Our paper on quantum solves of the Navier-Stokes equations using current quantum devices was accepted to Comptuters & Fluids! Congrats to Ph.D. student Jack Song and our collaborators at GTRI! You can view it <a href="https://doi.org/10.1016/j.compfluid.2024.106507" target="_blank">here</a>.</p>
<p><b>24 November, 2024</b>
Our group is at <a href="https://dfd-meeting.aps.org/">APS DFD</a> this week. Say hi and consider checking out some of our talks on multiphase flow, FSI, particle-laden flow, material characterization, and more! (most easily found via <a href="https://meetings.aps.org/Meeting/DFD24/PersonIndex/4610">here</a> and searching <i>Bryngelson</i>.)</p>
<p><b>16 November, 2024</b>
Spencer is speaking at <a href="https://www.stem-trek.org/2024/03/17/artsc24/">ART@SC24</a> today on HPC for PDE solves and large-scale training.</p>
<p><b>14 November, 2024</b>
Our project ExaMFlow, based on <a href="https://github.com/mflowcode/mfc">MFC</a>, is participating in JUREAP, the <a href="https://www.fz-juelich.de/en/ias/jsc/jupiter">JUPITER</a> Research and Early Access Program. ExaMFlow received the JUREAP certificate for scaling efficiency and node performance, with potential to use a significant part of the JUPITER Booster system and the first European exascale supercomputer, starting January 2025.</p>
<p><b>13 November, 2024</b>
We will be at <a href="https://sc24.supercomputing.org/">SC24</a> here in Atlanta next week. Our work includes cell-resolved simulations of aneurysms and exascale compressible flow methods. More <a href="https://sites.gatech.edu/research/sc-2024/">here</a> and <a href="https://sc24.conference-program.com/presenter/?uid=478593">here</a>.</p>
<p><b>10 October, 2024</b>
The group is awarded ACCESS-CI Accelerate annual allocation of 3M credits (equivalent to 45K A100 GPU hours) for developing sub-grid physics models!</p>
<p><b>20 September, 2024</b>
Our work on a fully quantum lattice algorithm for solving the Navier-Stokes equations was <a href="https://doi.org/10.1116/5.0217675" target="_blank">recently published in AVS Quantum Science</a>. Congrats to Sriharsha and Jack! We appreciate the collaboration with Bryan Gard (GTRI), Eugene Dumitrescu (ORNL), and Alex Alexeev (GT ME).</p>
<h5><a href="/allnews.html">… see all News</a></h5>
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<h5>About</h5>
<p><a href="https://cse.gatech.edu/" target="_blank">School of CSE</a><br/> <a href="https://cc.gatech.edu/" target="_blank">College of Computing</a><br/> Georgia Tech
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<p><a href="mailto:[email protected]" target="_blank"><i class="fa fa-envelope fa-1x"></i> Email Spencer</a> <br/> <a href="/vacancies.html"><i class="fa fa-users fa-1x"></i> Explore openings</a> <br/> <a href="https://github.com/sbryngelson/academic-website-template"><i class="fab fa-github fa-1x"></i> Site template</a>
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<center><p>Last updated on Jan 29, 2025</br>
© 2021-2025 Computational Physics @ GT </p></center>
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