Study of Convergence Time for Rarefied Gas Simulations Using an Unstructured DSMC Solver
作者： Hassan Akhlaghi
DOI: 10.1080/10407790.2014.992061
关键词: Physics 、 Mass flow rate 、 Statistical physics 、 Monte Carlo method 、 Mechanics 、 Flow (mathematics) 、 Drag coefficient 、 Heat transfer coefficient 、 Solver 、 Pressure coefficient 、 Parasitic drag
摘要: This article studies the required convergence time for direct-simulation Monte Carlo (DSMC) simulations of rarefied gas flows. An arbitrary-geometry DSMC solver (RGS2D) with an efficient particle-tracking algorithm is introduced and employed macro-/micro-scale flow applications. Convergence study performed by tracing different heat parameters such as intermolecular collision rate, number particles, drag coefficient, inlet/outlet mass distributions over wall, i.e., pressure skin friction transfer wall rate. The results indicate that simulation depends on capturing parameter.
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