The new model is also virtually identical to the Jones-Lauder model for free shear layers. The BSL model is identical to the Wilcox model in the inner 50 percent of the boundary-layer but changes gradually to the high Reynolds number Jones-Launder k-epsilon model (in a k-omega formulation) towards the boundary-layer edge. The new Baseline (BSL) model is designed to give results similar to those of the original k-omega model of Wilcox, but without its strong dependency on arbitrary freestream values. Two new versions of the k-omega two-equation turbulence model will be presented. Improved two-equation k-omega turbulence models for aerodynamic flows Although the k-omega model behaves well numerically and simulates effects of transition, freestream turbulence, and wall roughness, it was not decisively better than the Baldwin-Lomax model for the cases considered here.
The two models compared reasonably well with the data and surprisingly well with each other. Results were compared to theory, experimental data, and to results using the Baldwin-Lomax turbulence model. Three cases were calculated: transitional flow over a flat plate, a transonic compressor rotor, and transonic turbine vane with heat transfer. the k-omega model equations are also given and the upwind implicit approximate-factorization solution scheme is described. The flow equations are given and the explicit runge-Kutta solution scheme is described. the code includes the effects of rotation, radius change, and variable stream sheet thickness. A k-Omega Turbulence Model for Quasi-Three-Dimensional Turbomachinery FlowsĪ two-equation k-omega turbulence model has been developed and applied to a quasi-three-dimensional viscous analysis code for blade-to-blade flows in turbomachinery.
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