標題: Parallel three-dimensional DSMC method using mesh refinement and variable time-step scheme
作者: Wu, JS
Tseng, KC
Wu, FY
機械工程學系
Department of Mechanical Engineering
關鍵字: Monte Carlo method;DSMC;variable time-step;unstructured adaptive mesh refinement;mesh-quality control
公開日期: 1-Oct-2004
摘要: Application of variable time-step and unstructured adaptive mesh refinement in parallel three-dimensional Direct Simulation Monte Carlo (DSMC) method is presented. A variable time-step method using the particle fluxes conservation (mass, momentum and energy) across the cell interface is implemented to reduce the number of simulated particles and the number of iterations of transient period towards steady state, without sacrificing the solution accuracy. In addition, a three-dimensional h-refined unstructured adaptive mesh with simple but effective mesh-quality control, obtained from a preliminary parallel DSMC simulation, is used to increase the accuracy of the DSMC solution. Completed code is then applied to compute several external and internal flows, and compared with previous results wherever available. (C) 2004 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.cpc.2004.07.004
http://hdl.handle.net/11536/26341
ISSN: 0010-4655
DOI: 10.1016/j.cpc.2004.07.004
期刊: COMPUTER PHYSICS COMMUNICATIONS
Volume: 162
Issue: 3
起始頁: 166
結束頁: 187
Appears in Collections:Articles