TURBULENT TRANSITION SIMULATION USING THE K-OMEGA MODEL

This paper describes a novel approach in simulating laminar to turbule nt transition by using two-equation models. The Total Stresses Limitat ion (TSL) concept is used to make the two-equation model capable of pr edicting high-Reynolds-number transitional flow. In order to handle th e transition triggered by laminar separation at a low Reynolds number location, which commonly occurs in high speed flow, a sensor is introd uced to detect separation and trigger transition in the separated zone . Test cases include the classical flat-plate turbulent boundary flow, and low-pressure turbine cascade flows at design and off-design condi tions. (C) 1998 John Wiley & Sons, Ltd.