| 一种求解汽车外流场问题的可扩展数值算法 |
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| 引用本文： | 闫争争,陈荣亮,赵宇波,蔡小川.一种求解汽车外流场问题的可扩展数值算法[J].集成技术,2015,4(1):25-36. |
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| 作者姓名： | 闫争争 陈荣亮 赵宇波 蔡小川 |
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| 作者单位： | 中国科学院深圳先进技术研究院工程与科学计算研究室;美国科罗拉多大学博尔德分校计算机系 |
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| 基金项目： | 中国科学院知识创新工程重要方向项目(KJCX2-EW-L01);广东省科技计划国际合作项目(2011B050400037) |
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| 摘 要： | 受外型复杂、雷诺数高等因素影响,汽车外流场流动的数值计算规模巨大且难以精确求解。发展高效并行算法以利用超级计算平台资源来数值求解外流问题成为该领域的研究热点。文章提出一种全隐格式的可扩展并行Newton-Krylov-Schwarz算法对某真实汽车的外流场流动问题进行计算。通过与风洞试验以及主流计算流体力学软件的计算结果对比验证了算法的正确性。并行数值计算结果显示,文章的算法在数千处理器规模下仍具有很好的并行可扩展性。
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| 关 键 词： | 三维非定常不可压缩流动 Navier-Stokes方程 并行计算 区域分解算法 |
A Scalable Numerical Method for Simulating the External Flows around Cars |
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| Authors: | YAN Zhengzheng CHEN Rongliang ZHAO Yubo and CAI Xiaochuan |
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| Affiliation: | YAN Zhengzheng;CHEN Rongliang;ZHAO Yubo;CAI Xiaochuan;Research Centre for Science and Engineering Computation, Shenzhen Institutes of Advanced Technology,Chinese Academy of Sciences;Department of Computer Science, University of Colorado Boulder; |
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| Abstract: | The high-fidelity numerical simulation of unsteady flows around cars are a very challenging computational
problem because of the huge computation caused by high Reynolds number and complex geometry. In this paper, we
presented a scalable parallel Newton-Krylov-Schwarz based fully implicit algorithm for the full unsteady incompressible
flows around cars and compared our results with results obtained from commercial CFD software. Our algorithm shows
very good parallel scalability on a supercomputer with over two thousand processors. |
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| Keywords: | three-dimensional unsteady incompressible flows Navier-Stokes equations parallel computing domain
decomposition method |
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