Numerical investigation of flow over a circular cylinder at different gap ratios

2nd International conference on Advances in Mechanical Engineering

Kaur, Mandeep^1 ; Kumar, Pankaj^1

Department of Mechanical Engineering, SRM Institute of Science and Technology, India^1

关键词: Drag and lift coefficients;    Fluid-structures;    Gap effect;    Gap height;    Gap ratio;    Lift coefficient;    Numerical investigations;    Sub-critical;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/402/1/012156/pdf
DOI  :  10.1088/1757-899X/402/1/012156

来源: IOP

【 摘 要 】

The present paper numerically investigates the three-dimensional fluid flow with emphasis on the cylinder and wall gap effect. The non-dimensional gap ratio (G/D), between the cylinder end and the wall, ranges from 0, 2.5, 5, and 7.5 for the Reynolds number 3.7x104. Numerical analysis was done with help of finite volume method, which brings the detailed information of flow at different gap heights. The reduction in the vortex shedding and increase in amplitude of frequency of the lift coefficient is observed with the reduction in the gap ratio. Thus, the drag and lift coefficients exhibit the influence of gap ratio on fluid structure in wake.