Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2012-01-01

Journal: HEAT TRANSFER RESEARCH

Included Journals: Scopus、SCIE、EI

Volume: 43

Issue: 7

Page Number: 633-650

ISSN: 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.