摘要
用非定常不可压缩流动求解方法对三维方柱绕流问题作了大涡模拟计算研究。求解程序采用虚拟压缩方法和双时间步的时间推进方案,对流项的差分采用高阶精度的数值差分格式。通过与实验和文献结果比较分析,验证了基于虚拟压缩方法的湍流大涡模拟计算方案对于复杂的三维钝体绕流计算是可行的。
An unsteady incompressible Navier-Stokes solver is used for Large Eddy Simulation （LES） calculation of 3D flow past a square cylinder. The present solver uses a primitive variable formulation that is based on the artificial compressibility method combined with dual time stepping method. High order scheme is used for the differencing of the convective terms. The results are compared with detailed experiment data or computational results by other authors to prove the validation of using current methods to predict complex flows such as flows past bluff bodies.
出处
《空气动力学学报》
CSCD
北大核心
2008年第2期167-172,共6页
Acta Aerodynamica Sinica
基金
国家自然科学基金创新研究群体基金资助
关键词
湍流
大涡模拟
虚拟压缩方法
不可压缩流动
turbulent flow
large eddy simulation
artificial compressibility method
incompressible flow
