INVESTIGATION OF MODELING APPROACHES FOR SCALAR TRANSPORT AND MIXING IN LES

被引：0
|
作者：
Sun, Olivia S. [1 ]
Su, Lester K. [1 ]
Burton, Tristan M.
机构：
[1] Johns Hopkins Univ, Appl Fluid Imaging Lab, Dept Mech Engn, Baltimore, MD 21210 USA
来源：
PROCEEDINGS OF THE ASME FLUIDS ENGINEERING DIVISION SUMMER CONFERENCE, VOL 1, PTS A AND B | 2006年
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D O I：
暂无
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
LES models for subgrid scalar transport are assessed through large eddy simulation of passive scalar mixing in a turbulent round jet. The simulation is performed on a spherical coordinate grid using semi-implicit time advancement. The models used to close the subgrid scalar flux term are varied while the same modeling approach is used for the momentum model in order to isolate the effects of the scalar modeling. The subgrid scalar flux models tested include an eddy diffusivity model and a one-parameter mixed model. Model performance is analyzed by examining mean resolved-scale quantities and PDFs of the scalar concentration field.
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页码：1257 / 1266
页数：10
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