SOME DEVELOPMENTS IN COMPUTATIONAL MODELING OF TURBULENT FLOWS

In this paper, some recent developments of two turbulence closure sche mes at ICOMP, NASA Lewis will be discussed. One is the Reynolds-stress algebraic equation model and the other is the Reynolds-stress transpo rt equation model. Various model constraints required by the rapid dis tortion theory, the invariant theory and the realizability principle, etc. will be described in the model development. The models discussed are for high-turbulent Reynolds number flows, so that the near-wall tu rbulence and the low-Reynolds-number turbulence are not discussed here .