Experimental and Simulation Research of Channel Flowmeter Based on Gas and Water

De-fu Xu, Jun-Mu, Shun-li Wang, Dun-li Liu

Abstract

The measurement performance of the channel flowmeter is studied by meansof numerical simulation and experimental verification. The variation trend of the outflow coefficient and differential pressure value of the channel flow rate with the flow velocity under the gas-liquid two media is obtained, and the measurement error under the gas-water and liquid-phase conditions is analyzed. The results of numerical simulation are compared and analyzed. Research shows that there is a stable region of outflow coefficient in both gas phase and water phase experiment conditions. As the Reynolds number increases, the outflow coefficient tends to be a constant and does not change. In the stable outflow coefficient region, the difference of the upper limit value of Reynolds number is smaller than the difference of the lower limit value of Reynolds number. In the stable region of the outflow coefficient, the difference of the average outflow coefficients of the gas and liquid phases is not significant. In addition, the gas phase test shows that the critical back pressure ratio has a great influence on the outflow coefficient outside thestable outflow coefficient region, and the effect is not significant in the stable outflowcoefficient region.

Keywords

Channel flowmeter; Experimental researche; Simulation research

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IMEKO-TC9-2019-016.pdf

DOI

10.21014/tc9-2022.016

IMEKO TC

TC9 - Flow Measurement

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