| 近壁圆柱绕流水动力特性数值模拟与实验研究 |
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| 引用本文： | 王国兴,孙万卿.近壁圆柱绕流水动力特性数值模拟与实验研究[J].海洋工程,2010,28(1). |
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| 作者姓名： | 王国兴 孙万卿 |
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| 作者单位： | 1. 威海港集团有限公司,山东,威海,264200
2. 中国石油天然气勘探开发公司,北京,100034 |
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| 摘 要： | 通过数值模拟和物理模型实验,对距壁面一定高度的圆柱绕流水动力特性进行了研究。数值模拟采用有限体积法对标准k-ε模式方程进行离散,采用SIMPLE算法进行求解,模拟绕流流场。在物理模型实验中,将PVC圆管制作的实验模型安放在水槽内,在圆管的跨中沿表面周向均匀布置水下压力传感器,用于测量绕流圆柱体表面动水压力分布。通过改变Re数和间隙比来分析它们对近壁圆柱绕流水动力特性的影响。基于数值流动显示技术,给出了近壁绕流流场的尾流流态分析。通过数值结果与实验结果的对比,对近壁绕流圆柱体的升力系数及其表面动水压力分布进行了研究,对比结果显示了较好的一致性。
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| 关 键 词： | 圆柱绕流 标准k-ε模式 有限体积法 动水压力分布 间隙比 |
Numerical and experimental studies on a circular cylinder subject to a flow near a plane wall |
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| WANG Guo-xing,SUN Wan-qing.Numerical and experimental studies on a circular cylinder subject to a flow near a plane wall[J].Ocean Engineering,2010,28(1). |
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| Authors: | WANG Guo-xing SUN Wan-qing |
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| Institution: | 1.Weihai Port Group Co.;Ltd.;Weihai 264200;China;2.China National Oil & Gas Exploration and Development Corporation;Beijing 100034;China |
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| Abstract: | The objective of the present investigation is to study the hydrodynamic characteristics of a circular cylinder subject to a flow with various heights above a plane wall by the numerical and experimental approaches.A standard model is used to simulate the flow passing a circular cylinder in which the governing equations are discretized by the finite volume method and solved by the Semi-Implicit Method for Pressure Linked Equations(SIMPLE) algorithm.In the experiments,the pressure distributions around the cir... |
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| Keywords: | circular cylinder finite volume method hydrodynamic pressure distribution gap ratio |
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