| 明渠中跌坎后突扩分离流数值研究 |
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| 引用本文： | 刘沛清,邓学蓥.明渠中跌坎后突扩分离流数值研究[J].力学学报,1998,30(1):9-19. |
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| 作者姓名： | 刘沛清 邓学蓥 |
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| 作者单位： | 北京航空航天大学流体所，100083 |
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| 基金项目： | 国家博士后管理委员会基金 |
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| 摘 要： | 利用大涡模拟技术，对明渠中跌坎后的二维突扩分离流结构进行了数值模拟，探讨了这类典型分离流各特征区的流动性质，分析了再附区壁面上不同测点处脉动压力的统计特征，并与试验结果进行了比较．在数值模拟中，采用了弱压缩流的控制方程和非均匀网格系统．
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| 关 键 词： | 大涡模拟 分离流 跌坎 明渠流 数值模拟 |
NUMERICAL SOLUTION OF BACKWARD-STEP SEPARATION FLOW IN OPEN CHANNEL 1) |
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| Liu Peiqing,Deng Xueying.NUMERICAL SOLUTION OF BACKWARD-STEP SEPARATION FLOW IN OPEN CHANNEL 1)[J].chinese journal of theoretical and applied mechanics,1998,30(1):9-19. |
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| Authors: | Liu Peiqing Deng Xueying |
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| Abstract: | By use of the large-eddy simulation, numerical solutions of two-dimensional backward-step separation flows in open channels are obtained. The behavior in different regions for step-induced separation flow and statistical characteristics for fluctuation pressure on the wall within the reattachment zone is investigated. The results obtained are compared with the experimental values. A weakly compressible flow model and a non-uniform grid are used in this paper. The calculated results show that the method of t... |
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| Keywords: | large-eddy simulation separation flow backward step |
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