不同雷诺数下圆柱绕流流动特性数值模拟
Numerical Simulation of Flow Characteristics of Cylinder Around Flow under Different Reynolds Numbers
延嘉虹 1杨春1
作者信息
摘要
通过使用Fluent软件对雷诺数在100～700范围内的圆柱绕流进行数值模拟,通过对比尾流速度分布,揭示了不同雷诺数下圆柱绕流的流动规律.此外,在相同雷诺数下对不同流体绕流圆柱所得阻力系数进行对比讨论,将数值模拟所得不同雷诺数下涡脱落周期与通过斯特劳哈尔数公式计算得出的涡脱落周期进行误差分析,验证了Fluent数值模拟的准确性.
Abstract
In this paper,the cylindrical flow around the Reynolds number in the range of 100 to 700 is numerically simulated by Fluent software,and the flow law of the cylindrical flow under different Reynolds numbers is revealed by comparing the wake velocity distribution.In addition,the drag coefficients obtained by different fluids around the cylinder are compared and discussed under the same Reynolds number.In this paper,the error analysis of the eddy shedding period under different Reynolds numbers obtained by numerical simulation and the eddy shedding period calculated by the Straubhar number formula is also carried out.The accuracy of Fluent's numerical simulations is verified.
关键词
低雷诺数/圆柱绕流/Fluent模拟Key words
low Reynolds number/cylinder flow/Fluent simulation引用本文复制引用
基金项目
山西大学大学生创新训练计划资助项目(X202210108251)
出版年
2024
NETL
NSTL
万方数据