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| 圆柱绕流水动力学特性的数值模拟 | |
| 引用本文： | 吴言超,陆晓峰. 圆柱绕流水动力学特性的数值模拟[J]. 南京工业大学学报(自然科学版), 2012, 34(3): 134-138 |
| 作者姓名： | 吴言超 陆晓峰 |
| 作者单位： | 南京工业大学机械与动力工程学院,江苏南京,211816 |
| 摘 要： | 应用计算流体动力学软件FLUENT对低雷诺数(Re)(Re≤300)下圆柱绕流问题进行数值模拟。采用分区结构化网格及层流模型求解不可压缩Navier-Stokes方程,在未施加任何扰动的条件下获得了圆柱绕流2种特殊的绕流场,系统分析了壁面压力系数、平均阻力系数、脉动阻力、升力系数及旋涡脱落频率等水动力学特性参数随Re数变化的规律,结果与实验研究吻合较好。 |
| 关 键 词： | 低Re 圆柱绕流 水动力学特性 |
Numerical simulation on hydrodynamics characteristics for flow passing circular cylinder |
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| WU Yanchao , LU Xiaofeng. Numerical simulation on hydrodynamics characteristics for flow passing circular cylinder[J]. Journal of Nanjing University of Technology, 2012, 34(3): 134-138 | |
| Authors: | WU Yanchao LU Xiaofeng |
| Affiliation: | (College of Mechanical and Power Engineering,Nanjing University of Technology,Nanjing 211816,China) |
| Abstract: | Flow passing circular cylinder at low Reynolds number(Re≤300) was simulated by using software FLUENT.The method for multi-block structured mesh and the laminar model were adopted to solve the Navier-Stokes equations for unsteady laminar incompressible flow.Two special flow fields around circular cylinder without any disturbance were obtained.The relationship among the hydrodynamics parameters such as surface pressure,mean drag coefficient,fluctuating drag and lift coefficient,strouhal frequency of vortex shedding,and Re was investigated.The result showed that the computation results conform well to the experimental data. |
| Keywords: | low Reynolds number flow passing circular cylinder hydrodynamics characteristics |
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