| 具有自由液面效应的圆柱绕流三维数值模拟 |
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| 引用本文： | 岳永威,李梦阳,孙龙泉,王领.具有自由液面效应的圆柱绕流三维数值模拟[J].船舶,2012,23(4):16-22. |
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| 作者姓名： | 岳永威 李梦阳 孙龙泉 王领 |
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| 作者单位： | 哈尔滨工程大学船舶工程学院 哈尔滨150001;哈尔滨工程大学船舶工程学院 哈尔滨150001;哈尔滨工程大学船舶工程学院 哈尔滨150001;哈尔滨工程大学船舶工程学院 哈尔滨150001 |
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| 摘 要： | 基于计算流体力学软件CFX、应用RNG k-ε湍流模型、结合流体体积法(VOF法)模拟均匀流场中半沉浸三维圆柱运动,分析自由液面对圆柱尾迹以及圆柱表面水动力特征参数的影响。结果表明:在自由液面流场中,雷诺数较高时,自由液面对流场流动的影响较小;而雷诺数一定时,自由液面对流场的影响随着傅汝德数的增加而增加;在自由液面作用下,圆柱的时均阻力系数和时均压力系数随流场的傅汝德数和雷诺数的增加而减小。
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| 关 键 词： | 圆柱绕流 自由液面 流体体积法 RNG k-ε |
Numerical simulation of flow around a three-dimensional circular cylinder piercing free surface |
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| YUE Yong-wei,LI Meng-yang,SUN Long-quan,WANG Ling.Numerical simulation of flow around a three-dimensional circular cylinder piercing free surface[J].Ship & Boat,2012,23(4):16-22. |
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| Authors: | YUE Yong-wei LI Meng-yang SUN Long-quan WANG Ling |
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| Institution: | (College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China) |
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| Abstract: | Based on CFX,a CFD software,and turbulence model,combined with VOF(Volume of Fluid) method,the flow around the three-dimensional circular cylinder piercing free surface is simulated and the influence of free surface on the wake and the hydrodynamic parameters of the cylinder surface is analyzed.The results show that the influence of free surface on the flow field is weaker with higher Reynolds number,and is increasing with increasing Froude number for a constant Reynolds number.It is also shown that the time-averaged drag coefficient and pressure coefficient are decreasing with increasing Froude number and Reynolds number under the influence of the free surface. |
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| Keywords: | flow around a circular cylinder free surface VOF(Volume of Fluid) method RNG k-ε |
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