二维圆柱层流绕流及其控制数值模拟  

Numerical Study on Two-dimensional Laminar Flow and Control over a Circular Cylinder

作　　者：张群峰[1] 何鸿涛[1] 吕志咏[2] 

机构地区：[1]北京交通大学土建学院,北京100024 [2]北京航空航天大学流体力学研究所,北京100083

出　　处：《科学技术与工程》2009年第5期1187-1193,共7页Science Technology and Engineering

摘　　要：采用有限体积法求解二维N-S方程,通过改变时间、空间计算参数,对雷诺数100的二维圆柱非定常流场进行了数值模拟,将所得结果与实验数据以及已有的计算结果进行了对比。并对在尾部多个位置加入不同长度阻隔板控制流动的圆柱流场进行了考察。结果发现:在合适的位置放置阻隔板,可以有效抑制尾迹中涡脱落的形成。Two-dimensional unsteady flow over a circular cylinder for Reynolds-numbers value of 100 was simulated numerically through the method of solving the two-dimensional N-S equations by the finite volume method, using different parameters of time and space. The calculated results were given and compared with the experimental data and other numerical results. The flow fields around a circular cylinder controlled by a splitter plate inserted at various locations downstream of the cylinder were investigated. It is found vortex shedding in the wake of flow around a circular cylinder could be exterminated by placed a splitting plate at a right position.

关 键 词：CFL数 斯特劳哈数 圆柱绕流 涡脱落控制 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程]