RAPIDUS: A Unified, Performance-Portable CFD Framework on Unstructured, Curvilinear, and Strand Grids for Advanced Air Vehicles
The abstract is still under OPSEC review and it will be submitted as soon as it passes OPSEC review.
IMPACT
Accomplishment: Led the development of the RAPIDUS framework—a single-source, massively parallel, performance-portable CFD code—designed for both standalone simulations and complex multi-body overset configurations.  Result and Impact: On the DoD Nautilus HPC system, GPU-based runs using four NVIDIA A100-80GB GPUs achieved performance equivalent to approximately 28 CPU nodes (3584 cores), demonstrating a 7× reduction in computing footprint. This advancement significantly enhances the scalability and efficiency of high-fidelity CFD for the design and analysis of both rotary- and fixed-wing aircraft, directly supporting DoD objectives for the rapid development and fielding of advanced air platforms.
PRESENTER
Hosseinverdi, Shirzad
shirzad.hosseinverdi.ctr@army.mil
520-275-7453
Analytical Mechanics Associates, U.S. Army DEVCOM, Moffett Field, CA
CO-AUTHOR(S)
Jay Sitaraman
jayanarayanan.sitaraman.civ@army.mil
Andrew Bodling
andrew.l.bodling.ctr@army.mil
Vinod k. Lakshminarayan
vinod.k.lakshminarayan.ctr@mail.mil
Pavithra Premaratne
pavithra.d.premaratne.ctr@army.mil
Dylan Jude
dylan.p.jude.ctr@army.mil
CATEGORY
GPU usage for HPC
SECONDARY CATEGORY
Comp Fluid Dynamics
SYSTEM(S) USED
Nautilus, Coral, Raider