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physics.comp-ph2026
Adjoint shape optimization of oscillatory rarefied gas flows
Pengshuo Li, Lei Wu
A fast-converging and asymptotic-preserving adjoint shape optimization method is proposed for drag reduction of multiscale gas flows in vibrating micro-electro-mechanical systems.…
physics.flu-dyn2026
Small Rarefaction, Large Consequences: Limits of Navier Stokes Turbulence Simulations
Songyan Tian, Lei Wu
We conduct numerical simulations of rocket plume impingement on a lunar landing surface using two complementary frameworks: the Boltzmann equation, which naturally captures rarefie…
physics.comp-ph2026
Frequency-domain general synthetic iterative scheme for efficient simulation of oscillatory rarefied gas flows
Pengshuo Li, Lei Wu
Oscillatory rarefied gas flows are frequently encountered in MEMS, and their efficient numerical simulation remains a major challenge due to the time dependent nature of the proble…