The Baldwin-Lomax model for separated and wake flows using the entropy envelope conceptImplementation of the Baldwin-Lomax algebraic turbulence model is difficult and ambiguous within flows characterized by strong viscous-inviscid interactions and flow separations. A new method of implementation is proposed which uses an entropy envelope concept and is demonstrated to ensure the proper evaluation of modeling parameters. The method is simple, computationally fast, and applicable to both wake and boundary layer flows. The method is general, making it applicable to any turbulence model which requires the automated determination of the proper maxima of a vorticity-based function. The new method is evalulated within two test cases involving strong viscous-inviscid interaction.
Document ID
19920041140
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Brock, J. S. (NASA Lewis Research Center Cleveland, OH, United States)
Ng, W. F. (Virginia Polytechnic Institute and State University Blacksburg, United States)