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适用于流动转捩湍流连续模拟的大涡模拟模型研究
Authors
于长平
周浩
李新亮
Publication date
25 October 2018
Publisher
Abstract
前期报告人提出的基于螺旋度的涡粘模型可以很好的预测不可压缩/可压缩湍流,相对传统的涡粘模型取得了明显的改进效果。与一般的涡粘模型的区别是:新模型能够很好的预测湍流,自动判断层流、转捩,涡粘系数是判断层流、转捩的开关。在对可压缩平板转捩流动的模拟中,预测的转捩位置、转捩峰与直接数值模拟结果高度吻合。在压缩折角这一包含转捩、湍流分离以及激波结构的流动中,新模型可以对这一典型流动做出正确的预测
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Institute Of Mechanics,Chinese Academy of Sciences
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Last time updated on 18/12/2019