4 papers
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…
Multiscale simulation of interacting turbulent and rarefied gas flows in the DSMC framework
Liyan Luo, Songyan Tian, Lei Wu
A multiscale stochastic-deterministic coupling method is proposed to investigate the complex interactions between turbulent and rarefied gas flows within a unified framework. This…
Lateral turbulent jet in rarefied environment
Songyan Tian, Lei Wu, Minping Wan
Lateral jets play a crucial role in controlling the trajectory and aerodynamic heating of hypersonic vehicles. However, the complex interaction between turbulent and rarefaction ef…
Multiscale simulation of coexisting turbulent and rarefied gas flows
Songyan Tian, Lei Wu
Simulating complex gas flows from turbulent to rarefied regimes is a long-standing challenge, since turbulence and rarefied flow represent contrasting extremes of computational aer…