User:Milton Beychok/Sandbox: Difference between revisions
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==Thin-plate orifices== | |||
{{cite book|author=Richard W. Miller|title=Flow Measurement Engineering Handbook|edition=Third Edition|publisher=McGraw Hill|year=1996|isbn=0-07-042366-0}} | The flow of real gases through thin-plate orifices never becomes fully choked. The mass flow rate through the orifice continues to increase as the downstream pressure is lowered to a perfect vacuum, though the mass flow rate increases slowly as the downstream pressure is reduced below the critical pressure.<ref name=thin_plate_1>[http://www.engsoft.co.kr/download_e/steam_flow_e.htm Section 3 -- Choked Flow]</ref> Cunningham (1951) first drew attention to the fact that choked flow will not occur across a standard, thin, square-edged orifice.<ref name=thin_plate_2>[http://www.eng-tips.com/viewthread.cfm?qid=51260 Forum post on 1 Apr 03 19:37]</ref> | ||
<ref>{{cite book|author=Richard W. Miller|title=Flow Measurement Engineering Handbook|edition=Third Edition|publisher=McGraw Hill|year=1996|isbn=0-07-042366-0}}</ref> | |||
Revision as of 01:32, 2 January 2009
Thin-plate orifices
The flow of real gases through thin-plate orifices never becomes fully choked. The mass flow rate through the orifice continues to increase as the downstream pressure is lowered to a perfect vacuum, though the mass flow rate increases slowly as the downstream pressure is reduced below the critical pressure.[1] Cunningham (1951) first drew attention to the fact that choked flow will not occur across a standard, thin, square-edged orifice.[2] [3]
- ↑ Section 3 -- Choked Flow
- ↑ Forum post on 1 Apr 03 19:37
- ↑ Richard W. Miller (1996). Flow Measurement Engineering Handbook, Third Edition. McGraw Hill. ISBN 0-07-042366-0.