非淹没圆柱群局部水流场特征分析

发布时间：2018-05-20 02:42

  本文选题：非淹没圆柱群 + 剪切应力输运　； 参考：《水动力学研究与进展A辑》2016年02期

【摘要】：本文基于带自由表面水动力学数值模型,采用双方程k-ω的剪切应力输运(SST)湍流模式,对非淹没刚性圆柱群水流场进行了三维数值模拟。通过与实验数据的对比分析,验证了模型的有效性及模拟精度。通过圆柱群绕流场特征的模拟分析,探究了不同圆柱雷诺数和固体体积分数对柱群内剪切层渗入长度(δ)、柱群后尾流区剪切层长度以及床面应力空间分布特征的影响。
[Abstract]:Based on the hydrodynamic numerical model with free surface and using the two-equation k- 蠅 shear stress transport model (SST) turbulent model, a three-dimensional numerical simulation of the water flow field of a group of non-submerged rigid cylinders has been carried out in this paper. The validity and accuracy of the model are verified by comparing with the experimental data. The effects of Reynolds number and solid volume fraction on the length of shear layer (未), the length of shear layer in wake region and the spatial distribution of bed stress in a cylindrical group are investigated by means of the simulation analysis of the flow field characteristics around a cylindrical group.
【作者单位】： 上海交通大学船舶海洋与建筑工程学院;上海交通大学水动力学教育部重点实验室;
【基金】：国家重点基础研究发展计划(973计划,2014CB046200) 水利部公益性行业科研专项经费资助项目(201401027)~~
【分类号】：O357.5
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本文编号：1912864