Numerical Simulation of Flow around Rectangular Cylinders Using the Boltzmann Equation

被引：1

作者：

Rovenskaya, O. I. ^{[1
]}

Aristov, V. V. ^{[1
]}

机构：

[1] Russian Acad Sci, Fed Res Ctr Comp Sci & Control, Dorodnicyn Comp Ctr, Vavilova St 40, Moscow 119333, Russia

来源：

30TH INTERNATIONAL SYMPOSIUM ON RAREFIED GAS DYNAMICS (RGD 30) | 2016年 / 1786卷

关键词：

rectangular cylinder; side ratio; Boltzmann equation; SQUARE CYLINDER; LAMINAR; NUMBERS;

D O I：

10.1063/1.4967544

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A two-dimensional unsteady flow past a rectangular cylinder has been investigated numerically using the Boltzmann equation. The effect of cylinder aspect ratio varying from 1 to 10 and the flow Reynolds number from 10 to 400 on flow pattern has been analyzed. Results are presented in terms of drag, lift and pressure coefficients and Strouhal number of vortex shedding. Flow visualization images in the wake of the cylinder are shown and discussed. It was found that the shape and size of the recirculation bubble downstream of the cylinder are strong functions of its aspect ratio. Drag, lift, pressure coefficients and Strouhal number strongly depend on Re in steady regime while a dependence becomes weaker in unsteady flow regime. The flow configuration over a cylinder also varies with the aspect ratio. In addition, the present predictions are compared with numerical and experimental results from other works and a good agreement is reached.

引用

页数：7

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