| 钛合金片层组织生长相场的大规模并行模拟 |
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| 引用本文： | 张鉴.钛合金片层组织生长相场的大规模并行模拟[J].华中科技大学学报(自然科学版),2011,39(Z1):95-98. |
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| 作者姓名： | 张鉴 |
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| 作者单位： | 中国科学院网络信息中心,北京,100190 |
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| 基金项目： | 中国科学院知识创新工程领域前沿基金资助项目(O815011103); 国家高技术研究发展计划资助项目(2006AA01A117,2006AA01A116,2009AA01A134,2009AA01A130,2010AA012301) |
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| 摘 要： | 采用大规模并行计算进行钛合金中片层组织生长相场模型的数值模拟.针对Allen-Cahn和Cahn-Hilliard等相场模拟方程,在均匀网格上采用时域有限差分显式时间步进和算子分裂的数值算法.基于消息传递接口(MPI)实现三维区域分解和计算与通信重叠的并行算法.在深腾7000上通过测试,显示程序具有良好的可扩展性.在1 0243计算网格上使用4 096核的并行效率达到94.2%,每个时间步耗时约0.2s.
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| 关 键 词： | 钛合金 区域分解 有限差分 并行 相场 |
Large scale parallel numerical simulation of a phase field model for side-plates formation in Ti-alloys |
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| Zhang Jian.Large scale parallel numerical simulation of a phase field model for side-plates formation in Ti-alloys[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2011,39(Z1):95-98. |
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| Authors: | Zhang Jian |
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| Institution: | Zhang Jian(Computer Network Information Center,Chinese Academy of Sciences,Beijing 100190,China) |
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| Abstract: | Large scale parallel numerical simulations of a phase-field model for side-plates growth in Ti-alloys was realized.The Allen-Cahn and Cahn-Hilliard equations were solved using finite difference time domain(FDTD) method on uniform grid with explicit time stepping and operator splitting.Based on the message passing interface(MPI),the parallel realization was carried out by 3D domain decomposition and overlapping of computation and communication.The software was tested on Deepcomp 7000 and shows good scalabili... |
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| Keywords: | Ti-alloys domain decomposition finite difference parallel phase field |
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