Effect of Nonequilibrium Condensation of Moist Air on Transonic Flow Fields

Abstract

When condensation occurs in a supersonic flow field, the flow is affected by the latent heat released. In the present study, a condensing flow was produced by an expansion of moist air in circular bump models and shock waves were occurred in the supersonic parts of the fields. The experimental investigations were carried out to show the effects of initial conditions in the reservoir and nozzle geometries on the shock wave characteristics and the turbulences in the flow fields. Furthermore, in order to clarify the effect of the condensation on the flow fields with shock waves, Navier-Stokes equations were solved numerically using a 3 rd-oder MUSCL type TVD finite-difference scheme with a second order fractional step for time integration.