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Indexed by:期刊论文

Date of Publication:2013-11-01

Journal:HEAT AND MASS TRANSFER

Included Journals:SCIE、EI、Scopus

Volume:49

Issue:11

Page Number:1525-1533

ISSN No.:0947-7411

Abstract:The two-phase flow process in an ejector was numerically and experimentally studied using R141b as a working fluid. A modified one-dimensional gas-liquid ejector model was proposed to remedy the defect in the traditional one. Gas-liquid boundary layer regions were discussed and used to close the model. Mac Cormack method is used to discrete controlling equations of gas-liquid two-phase flow in the ejector. The radial distribution of velocity and temperature, the variation of void fraction, the axial velocity variation and the influence of primary steam pressure on the mixing process were predicted with the numerical model. An experimental rig was set up to validate the model by comparing the experimental pressure distribution in the ejector with the calculating one.