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| A parallel DSMC method using 2D self-adaptive unstructured meshes |
| Received:April 04, 2007 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20092022 |
| KeyWord:self-adaptive unstructured mesh DSMC parallel algorithm MPI |
| Author | Institution |
| 王学德 |
南京理工大学动力工程学院,南京 |
| 伍贻兆 |
南京航空航天大学航空宇航学院,南京 |
| 夏健 |
南京航空航天大学航空宇航学院,南京 |
| 林晓宏 |
南京理工大学动力工程学院,南京 |
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| Abstract: |
| In this paper, a parallel DSMC method Using 2D unstructured adaptive meshes is developed for the efficient simulation of rarefied gas flows. Strategies to adjust cell size are presented through mesh adaptation for the improvement of solution accuracy. A complete parallel algorithm of 2D unstructured DSMC method, including domain decomposition technique and communication method, is designed using SPMD and master slave parallel mode. As a consequence, not only is the computation time reduced, but also is the computation precision largely improved. New feature of FORTRAN90 is fully exploited which makes the code more flexible. Finally, numerical experiments are made for hypersonic rarefied gas flow, In some extent, the numerical results confirm the feasibility of the method mentioned above. |
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