San Francisco : Architect and Engineer, Inc · leaf 299
compressibility is negligible, theflow in such a convergent-divergent channel isquite straightforward and, of course, results in thewell known principles of the Venturi. Under suchconditions, since the rate of mass flow is the sameat all points along the tube, it is evident that thevelocity must be… … Fie 2COMPKSSIBLE FLOW IN t CLOSED PIP[ increased, however, it will be found that the veloc-ity in the throat increases up to a critical value.This critical value is the speed of sound in the gas.Additional increases in the pressure ratio will notproduce velocities in the throat which exceed…
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