Study of the condensation process in nozzles with a large degree of expansion
This article is devoted to study of the condensation process in nozzles with a large degree of expansion. The flow of an inviscid gas in axisymmetric nozzles and jets is numerically simulated based on a quasi-two-dimensional nonstationary approximation. Two approaches to the modeling of condensation processes are considered: the kinetic method and the moment method. The two-phase medium is a multi-component gas (carrier gas and vapor of a condensable substance) and clusters (droplets) of a condensable substance. The gas phase and the droplets are in mechanical equilibrium. The results of test calculations for the condensation of water vapor in shock tubes and nozzles and the results of calculating the condensation of water in the nozzle of a hypersonic shock tube are presented