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论文类型：期刊论文

发表时间：2012-01-01

发表刊物：HEAT TRANSFER RESEARCH

收录刊物：EI、SCIE、Scopus

卷号：43

期号：7

页面范围：633-650

ISSN号：1064-2285

关键字：supersonic steam flow; condensation shock; pressure characteristics; nonequilibrium phase change

摘要：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.