Lattice-BGK simulation of a two-dimensional channel flow around a square cylinder

• 来源期刊: 中国物理（英文版）
• 学科: 物理学
• 关键词: lattice-BGK method square cylinder Strouhal number drag coefficient
• 年，卷（期）: 2003,（1）
• 页码范围: 67-74
• 页数: 8页
• 分类号: O4
• 语种: 英文

摘要

The confined flow around a square cylinder mounted inside a two-dimensional channel (blockage ratio3 = 1/8) was investigated in detail by a newly developed incompressible nonuniform lattice-BGK model. It is found that the vortex shedding behind the cylinder induces periodicity in the flow field, and the periodicity of the flow will lose for Re ＞300.A detailed analysis for a range of Reynolds numbers between 1 and 500 was presented. Quantitative comparisons with other methods show that the model gives accurate results for complex flows.