Choking and Mixing of Two Compressible Fluid Streams

[+] Author and Article Information
D. R. Otis

Dept. of Mechanical Engineering, The University of Wisconsin-Madison, Madison, Wisc.

J. Fluids Eng 98(2), 311-317 (Jun 01, 1976) (7 pages) doi:10.1115/1.3448294 History: Received August 15, 1975; Online October 12, 2010


The mixing of a supersonic with a subsonic stream is treated in a one-dimensional, ideal gas analysis to determine when the mixed flow can be supersonic and to reveal the relationship between certain phenomena described by the terms “forbidden region” of “thermal choking.” A singularity in the equations is shown to divide the mixing process solution curves into two branches: subcritical or supercritical leading, respectively, to subsonic or supersonic mixed states.

Copyright © 1976 by ASME
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