CORRELATED COMPRESSIBLE AND INCOMPRESSIBLE CHANNEL FLOWS

Compressible flow in channels of slowly varying cross section at moder ately high Reynolds numbers is treated in the paper by employing some Stewartson-type transformations that convert the problem into an incom pressible one. Both adiabatic flow and isothermal flow are considered, and a Poiseuille-type incompressible solution is mapped onto compress ible plane in order to generate some exact solutions of the compressib le governing equations. The results show striking effects that viscosi ty may have upon the flow characteristics in this case, in comparison with more conventional high Reynolds number flows.