Flowfield structure characteristics of the hypersonic flow over a cavity: From the continuum to the transition flow regimes

DSMC simulation of rarefied gas flow over a 2D backward-facing step in the transitional flow regime: Effect of Mach number and wall temperature

“…The statistical behavior and micro perspective are the DSMC’s characteristic features. 6 The working process of DSMC is explained in the following steps: (a) Reading grid data and recording the information of the boundary condition; (b) Initializing flow fields and calculating the entering number of simulated molecules; (c) Simulating molecule movement and interactions with the boundaries; (d) Indexing the simulated particles; (e) Probabilistically selecting simulated molecules and computing their collisions; (f) Sampling for the flow properties in the domain and repeating steps (c)-(f) until reaching steady state; (g) Writing out the information of the flow fields.…”

“…5 The hypersonic reentry vehicle passes through various rarefaction regimes, various Mach regimes, various atmospheric temperatures, and it experience complex flow behaviors, which include shock interactions. 6 In the present article, we address the effect of these conditions on the flow behavior over the BFS.…”