venturi wet gas flow modeling based on homogeneous and separated flow theory
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ID: 139360
2008
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Abstract
When Venturi meters are used in wet gas, the measured differential pressure is higher than it would be in gas phases flowing alone. This phenomenon is called over-reading. Eight famous over-reading correlations have been studied by many researchers under low- and high-pressure conditions, the conclusion is separated flow model and homogeneous flow model performing well both under high and low pressures. In this study, a new metering method is presented based on homogeneous and separated flow theory; the acceleration pressure drop and the friction pressure drop of Venturi under two-phase flow conditions are considered in new correlation, and its validity is verified through experiment. For low pressure, a new test program has been implemented in Tianjin University’s low-pressure wet gas loop. For high pressure, the National Engineering Laboratory offered their reports on the web, so the coefficients of the new proposed correlation are fitted with all independent data both under high and low pressures. Finally, the applicability and errors of new correlation are analyzed.
| Reference Key |
lide2008mathematicalventuri
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|---|---|
| Authors | ;Fang Lide;Zhang Tao;Xu Ying |
| Journal | journal of power sources |
| Year | 2008 |
| DOI |
10.1155/2008/807287
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| URL | |
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