Expansion of a Very Low Quality Two-Phase Fluid Through a Convergent-Divergent Nozzle

[+] Author and Article Information
E. S. Starkman, V. E. Schrock

University of California, Berkeley, Calif.

K. F. Neusen

Allis-Chalmers Mfg. Co., Milwaukee, Wis.

D. J. Maneely

United Technology Corporation, San Jose, Calif.

J. Basic Eng 86(2), 247-254 (Jun 01, 1964) (8 pages) doi:10.1115/1.3653047 History: Received November 21, 1962; Online November 03, 2011


Flow in de Laval nozzles of high pressure, low-quality steam-water mixtures was investigated to determine the resulting mass flow rates and to acquire design criteria information. Qualities ranged from 0 to 20 percent and pressures up to 1000 psia. Comparisons of the experimental data to three simple models: (a) isentropic expansion; (b) frozen composition; and (c) slip flow, showed satisfactory correspondence at all conditions except for qualities very close to saturated liquid. Observation was made that a condition similar to shock resulted when the nozzles were overexpanded.

Copyright © 1964 by ASME
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