钝体势流绕流的有限元并行计算 (王吉飞; 万德成)

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【作者】王吉飞; 万德成 【作者单位】上海交通大学船舶海洋与建筑工程学院海洋工程国家重点实验室

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W%f(o+vR;klN0Zg0【论文摘要】 本研究把有限元法与并行计算工具箱 PETSc(Portable,Extensible Toolkit for Scientific Computation)结合,对理想不可压流体中二维无限域的圆柱绕流和三维无限域的圆球绕流问题分别进行了有限元离散和并行数值计算,验证了网格的分辨率、计算精度与并行计算效率的关系,计算得到的流场速度分布和物体表面压力分布结果与解析解比较,两者吻合很好。数值计算结果表明,有限元法与 PETSc 结合可以高效率实现理想不可压流体钝体绕流问题的并行数值求解,为今后开展复杂黏性流体流动问题的并行计算奠定了基础.水利论文}dp'm{ e'gO4Nw

QqH I-gA0【英文论文摘要】 In this paper,the coupled FEM(finite element method)and PETSc(Portable, Extensible Toolkit for Scientific Computation)is applied for parallel simulation of potential flows around obstructions.Two numerical experiments are presented:potential flows around cylinder in 2D infinity domain,and potential flows around sphere in 3D infinity domain.The numerical solutions are found coinciding very well with the corresponding analytic solutions,and the efficiency of the parallel performance is validated to show that the coupled FEM and PETSc can provide an efficient parallel tool to simulate the potential flows around obstructions.

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Oe3o8Cy4J0【论文关键词】 势流; 有限元法; 钝体绕流; PETSC; 并行计算
V0X_9{)H&t$iD;N4F0【英文论文关键词】 finite element method; potential flows around obstructions; PETSc; parallel simulation
^ O"v8t}:Bt-Z0【基金】国家自然科学基金(No.10672101);; 教育部博士点基金(No.20060248039)的资助,水利论文4Gy9O(|~ hF3a'~9CA#K.e
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TAG: 有限元 万德成 王吉飞 体势
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