Investigation of Numerical Modeling Techniques for Recirculating Flows Part 1 and 2

摘要

The successful computational solution of complex shear flows of physical interest will require advances from the present state-of-the-art in both numerical (computational) techniques and physical modeling of the transport process. This report reviews aspects of physical models given in the literature which may be appropriate, in the sense of their extendability, as a basis of models for complex turbulent flows in which buoyancy generation of turbulence and flow curvature are prevalent. A particular model is proposed for the specific case where the fairly thin shear layer approximations are imposed and where local curvature is constant. In addition a Richardson number is proposed for flows in which both curvature and buoyancy are dominant factors of flow stabilization.