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http://dx.doi.org/10.3795/KSME-B.2012.36.4.449

A Numerical Study on the Factors of the Flow Hunting in a Orifice Meter  

Shin, Chang-Hoon (R&D Division, Korea Gas Corporation (KOGAS))
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.36, no.4, 2012 , pp. 449-455 More about this Journal
Abstract
During the measurement of the flow rate of gases such as natural gas, flow hunting is observed in most orifice meters but the intensity of flow hunting at each metering system shows different characteristics. In order to investigate why such a difference occurs and whether the difference actually influences metering error, pipeline network analysis on the main factors and characteristics of flow hunting was carried out in a previous study. Following this, in this study, computational fluid dynamics (CFD) analysis was carried out to clarify the relation between flow instability and flow hunting and determine the factors influencing the orifice meter depending on the intensity of upward pressure fluctuation, time interval, and flow rate. Finally, we showed that the pressure hunting rate is a function of the ratio of the pressure difference before and after an orifice meter. On the basis of CFD analysis results, we also presented some major factors and relations influencing flow hunting.
Keywords
Orifice Meter; Flow Hunting; Pressure Difference;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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