本文采用直接模拟蒙特卡罗方法对二维微通道内Poiseuille流动进行了数值模拟,通过对不同网格密度下计算结果与"收敛"结果的比较,得到了计算网格特别是子网格系统对计算结果的影响;在此基础上,发展了基于Delaunay三角形非结构网格的子网格系统,讨论了采用该子网格的非结构化网格对模拟结果的影响,结果表明:该方法能有效提高模拟的准确性,而常规无子网格的非结构网格将"虚假"地增加气体流动的稀薄性.
参考文献
| [1] | Bird G A.Molecular Gas Dynamics and the Direct Simulation of Gas Flows[M].Oxford:Clarendon Press,1994 |
| [2] | Anderson W K .A Grid Generation and Flow Solution Method for the Euler Equations on Unstructured Grids[J].Journal of Computational Physics,1994,110:23-28. |
| [3] | J. S. Wu;K. C. Tseng;C. H. Kuo .The direct simulation Monte Carlo method using unstructured adaptive mesh and its application[J].International Journal for Numerical Methods in Fluids,2002(4):351-375. |
| [4] | J.-S. Wu;K.-C. Tseng .Parallel Particle Simulation of the Near-Continuum Hypersonic Flows Over Compression Ramps[J].Journal of Fluids Engineering: Transactions of the ASME,2003(1):181-188. |
| [5] | He Q W;Wang Q W;Wang X.Computational Investigation of Low-Speed Gas Flow and Heat Transfer in Micro-Channel Using DSMC with Pressure Boundary Condition[A].Southampton:WIT press,2004:461-469. |
| [6] | Karniadakis D G;Beskok A.Micro Flows Fundamentals and Simulation[M].New York:Springer,2001:94-95. |
| [7] | 陶文铨.计算传热学的近代进展[M].北京:科学出版社,2001:71-79. |
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