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Indexed by:期刊论文

Date of Publication:2012-01-01

Journal:HEAT TRANSFER RESEARCH

Included Journals:EI、SCIE、Scopus

Volume:43

Issue:7

Page Number:633-650

ISSN No.:1064-2285

Key Words:supersonic steam flow; condensation shock; pressure characteristics; nonequilibrium phase change

Abstract:In the present study, a supersonic nonequilibrium steam flow with spontaneous condensation was studied numerically using a conservation-type two-dimensional compressible numerical model for a converging-diverging nozzle. The research explored the effect of steam pressure at the onset of nucleation and the intensity of condensation shock in the converging-diverging nozzle; however, the main focus was on the pressure characteristics of a nonequilibrium phase change. This study used simulation to show the influence of changes in the inlet pressure on the thermodynamic processes of spontaneous homogenous nucleation and the condensation shock in a supersonic steam flow. Additional research covered the impact of pressure changes on the thermodynamic properties such as the supersaturation ratio and nucleation rate.