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: | 1-十月-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 |
顯示於類別: | 期刊論文 |