吴言超;陆晓峰;

• 1:南京工业大学机械与动力工程学院

摘要(Abstract)：

为分析圆柱绕流近场水动力学特性随雷诺数变化规律,采用分区结构化网格及层流模型求解不可压缩Navier-Stokes方程,对低雷诺数圆柱绕流进行数值模拟.在未施加任何扰动的条件下获得圆柱绕流2种特殊绕流场;分析壁面压力因数、平均阻力因数、脉动阻力、升力因数、Strouhal数及边界层分离点等参数随雷诺数变化规律,结果与实验研究吻合较好.

关键词(KeyWords)：低雷诺数;圆柱绕流;水动力学特性;数值模拟

Abstract:

Keywords:

基金项目(Foundation):

作者(Author):吴言超;陆晓峰;

Email:

参考文献(References)：

• [1]董双岭,吴颂平.圆柱绕流尾迹中涡的特征分析[J].北京航空航天大学学报,2009,35(6):758-761.

• [2]尹德操,尤云祥,魏岗.两层黏性流体中直立圆柱体绕流的三维数值模拟[J].水动力学研究与进展,2008,23(1):1-6.

• [3]吴文权,居江宁.圆柱绕流远场旋涡结构的数值研究[J].工程热物理学报,2001,22:17-20.

• [4]李玲,李玉梁.应用基于RNG方法的湍流模型数值模拟钝体绕流的湍流流动[J].水科学进展,2000,11(4):357-361.

• [5]姚熊亮,方媛媛,戴绍仕,等.基于LES方法圆柱绕流三维数值模拟[J].水动力学研究与进展:A辑,2007,22(5):564-572.

• [6]Coutanceau M,Bouard R.Experimental determination of the main features of the viscous flow in the wake of a circular cylinder in uni-form translation:steady flow[J].Journal of Fluid Mechanics,1977,79(2):231-256.

• [7]Taneda S.Experimental investigation of the wakes behind cylinders and plates at low Reynolds numbers[J].Journal of the PhysicalSociety of Japan,1956,11(3):302-307.

• [8]Rajani B N,Kandasamy A,Majumdar S.Numerical simulation of laminar flow past a circular cylinder[J].Applied MathematicalModelling,2009,33:1228-1247.

• [9]Park J,Kwon K,Choi H.Numerical solutions of flow past a circular cylinder at Reynolds numbers up to 160[J].KSME InternationalJournal,1998,12(6):1200-1205.

• [10]李正光.绕圆柱非定常周期性涡旋脱落的数值模拟[J].水动力学研究与进展:A辑,2000,15(4):493-504.

• [11]Dennis S C R,Chang G.Numerical solutions for steady flow past a circular cylinder at Reynolds numbers up to 100[J].Journal ofFluid Mechanics,1970,42(3):471-489.

• [12]Williamson C H K,Roshko A.Measurement of base pressure in the wake of a cylinder at low Reynolds numbers[J].Zeitschrift fuerFlugwissenschaften and Weltraumforschung,1990,14:38-46.

• [13]钱翼稷,周玉文.流体力学及其工程应用[M].北京:机械工业出版社,2006.

• [14]Norberg C.Fluctuating lift on a circular cylinder:review and new measurements[J].Journal of Fluids and Structures,2003,17:57-96.

• [15]Roshko A.On the development of turbulent wakes from vortex streets[R].NACA Report 1191,1954.

• [16]Norberg C.Flow around a circular cylinder:aspects of fluctuating lift[J].Journal of Fluids and Structures,2001,15:459-469.

• [17]Williamson C H K,Brown G L.A series in 1/to represent the Strouhal-Reynolds number relationship of the cylinder wake[J].Jour-nal of Fluids and Structures,1998,12:1073-1085.

• [18]Fey U,Konig M,Eckelmann H.A new Strouhal-Reynolds-number relationship for the circular cylinder in the range 47

• [19]WU M H,WEN C Y,YEN R H,et al.Experimental and numerical study of the separation angle for flow around a circular cylinderat low Reynolds number[J].Journal of Fluid Mechanics,2004,515:233-260.