Transcription of Choked Flow of Gases - Rebreather
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Choked Flow of Gases - Rebreather
38. Choked Flow of Gases TUTORIAL. The Basic Concept When the air velocity reaches sonic velocity The reason for the mass flow rate limitation is A greatly misunderstood and misapplied (P2 /P1 .528) further increases in P1 (upstream the fixed inlet density combined with the fixed notion is that of Choked flow , also referred pressure) do not cause any further increase in velocity. The flow charts on pages 16-18 show to as critical flow . the air velocity through the orifice. Conse- the Choked mass flow effect for vacuum con- quently it is wrongly concluded that the mass ditions. At vacuum levels between 15-30 Hg In gas flow through an orifice there is an occa- flow rate also does not increase.
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