Comparison of hybrid turbulence models for a circular cylinder and a cavity

被引：0
|
作者：
Nichols, R.H. [1 ,2 ,3 ]
机构：
[1] University of Alabama at Birmingham, Birmingham, AL 35294
[2] Department of Mechanical Engineering
[3] AIAA
来源：
AIAA Journal | 2006年 / 44卷 / 06期
关键词：
Three hybrid Reynolds-averaged Navier-Stokes/large-eddy simulation turbulence models are applied to the flow over a three-dimensional circular cylinder and a generic weapons bay. Time-step and grid sensitivity studies are performed. The time-step study indicates that 100-200 steps per primary shedding cycle are required for temporal accuracy using a second-order implicit algorithm. The grid study indicates that these new turbulence models can achieve a reasonably grid-independent solution in simulation of unsteady turbulent flows. As the mesh resolution is increased; smaller scale turbulent structures become visible. A computational mesh with a grid resolution resulting in a ratio of the turbulent length scale to grid length scale greater than 2 produced a reasonable simulation with all three hybrid models for both cases;
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摘要：
Journal article (JA)
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页码：1207 / 1219
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