Prediction of Two-Phase Critical Flow Rate

[+] Author and Article Information
S. Levy

General Electric Company, Atomic Power Equipment Dept., San Jose, Calif.

J. Heat Transfer 87(1), 53-57 (Feb 01, 1965) (5 pages) doi:10.1115/1.3689050 History: Received March 24, 1964


An analytical model to predict two-phase critical flow rate is proposed. The model is based upon thermal equilibrium, a “lumped” treatment of the two-phase velocity (each phase is represented by a single mean velocity), and upon the neglect of frictional and hydrostatic pressure losses. A comparison of the proposed predictions with available test results and previous analyses shows that: (a) The present model agrees very well with the published test data; (b) In contrast to all other analyses, the model requires no assumption about the gas void fraction.

Copyright © 1965 by ASME
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