摘要
利用中国科学院计算机网络信息中心的深腾7000超级计算机系统，在MPI环境下测试分析了32～384核并行计算的时间成本和并行效率，测试表明128核并行计算具有最佳“时间＆效率”，并选择此计算加载状态开展计算研究。通过求解RANS方程，研究了雷诺数对三维机翼增升装置流场特性与流动分离特性的影响，计算雷诺数范围1．75×10620．0×10^6，分析表明，随着雷诺数的增大，外襟翼上分离位置逐渐向后缘移动，吸力峰值变大。与此现象相对应的升力系数逐渐增大，力矩系数变小。在雷诺数达到10^7量级时，升力系数及力矩系数的变化趋于平缓，而在雷诺数为5．0×10^6之前，增升装置的气动力对雷诺数影响十分敏感。
The ＂time cost and parallel efficiency＂ of 32-384 cores are tested on DeepComp 7000 in Supercomputing Center of Chinese Academy of Sciences. Testing result showed that the 128_core parallel computing has the optimized performance and it was chosen to investigate the Reynolds number effects on the flow separation by solving N-S equation.The Reynolds number 1.75×10^6-20.0×10^6 are analyzed. With the Reynolds number increasing, the peak of suction is higher and the location of flow separation on out_flap wing is moving back gradually. The lift is enhancing markedly while the Reynolds number is less than 5.0×10^6 and the pitch moment is lessening evidently while the Reynolds number is at the 107 scale.
出处
《科研信息化技术与应用》
2012年第5期42-47,共6页
E-science Technology & Application
基金
国家高技术研究发展计划(863计划)(2012AA01A304)
关键词
流动分离
雷诺数效应
增升装置
深腾7000
Flow Separtation
Reynolds number effect
High_lift device
DeepComp 7000
