Hysteretic Phenomenon of Underexpanded Moist Air Jet

摘要: Moist air jets, corresponding to the range of moderately underexpanded strongly conditions, have been investigated with help computational fluid dynamics methods. The equations for nucleation rate and droplet growth are incorporated into unsteady, compressible Navier-Stokes equations. A third-order total variation diminishing finite difference scheme monotonic upstream schemes conservation lows is employed discretize spatial derivatives governing experiment performed validate predictions. initial degree supersaturation changed obtain different values relative humidity moist air. pressure ratio investigate characteristic behavior jets generated during transient processes startup shutdown. results obtained show that jet produced behaves from shutdown process, leading a hysteretic phenomenon jet. It also known reduces compared dry jet, nonequilibrium condensation occurs in responsible these findings.