Performance Modeling and Comparisons of an FPGA-based Direct Simulation Monte Carlo Solver
Saleen Bhattarai, Edwin G. W. Peters, Sean B. O'Byrne, David J. Petty · 2025
We present an FPGA-based DSMC solver using a novel spatially-parallel collision evaluation algorithm, eliminating race conditions common in conventional DSMC methods. Our solver maintains high accuracy and achieves speedups of up to 5.5× over CPU and 1.5× over GPU implementations in low particle counts, particularly benefiting microscale flow scenarios requiring numerous repeated simulations.