Turbulence modeling in simulation of gas-turbine flow and heat transfer.
The popular k-epsilon type two-equation turbulence models, which are calibrated by experimental data from simple shear flows, are analyzed for their ability to predict flows involving shear and an extra strain--flow with shear and rotation and flow with shear and streamline curvature. The analysis is based on comparisons between model predictions and those from measurements and large-eddy simulations of homogenous flows involving shear and an extra strain, either from rotation or from streamline curvature. Parameters are identified, which show the conditions under which performance of k-epsilon type models can be expected to be poor.
Brereton
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Department of Mechanical Engineering, Michigan State University, East Lansing, MI 48824-1226, USA.
Shih
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TI