6 papers
Parallel simulation of rarefied gas flows on unstructured meshes using the DIG-augmented DSMC method
Tao Huang, Liyan Luo, Hong Deng +1
While the direct simulation Monte Carlo (DSMC) is a mainstream stochastic particle method for simulating rarefied gas flows, it incurs excessively high computational costs in the n…
Efficient simulation of chemical reaction in DSMC
Hong Deng, Liyan Luo, Lei Wu
A macroscopic mesoscopic, deterministic stochastic coupling strategy is proposed to accelerate the direct simulation Monte Carlo (DSMC) method for chemical reaction. First, a macro…
Enhancing DSMC simulations of rarefied gas mixtures using a fast-converging and asymptotic-preserving scheme
Liyan Luo, Jianan Zeng, Yanbin Zhang +3
The numerical simulation of rarefied gas mixture dynamics with disparate masses using the direct simulation Monte Carlo (DSMC) method is slow, primarily because the time step is co…
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…
Multiscale simulation of rarefied polyatomic gas flow via DIG method
Liyan Luo, Tao Huang, Qi Li +1
A novel multiscale numerical method is developed to accelerate direct simulation Monte Carlo (DSMC) simulations for polyatomic gases with internal energy. This approach applies the…
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…