作者：Mengke Zhan Muhammad Alif bin Razali Ayush Moitra Cheng-Gang Xie Wai Lam Loh Jian-Jun Shu
多相流量计（MPFM）用于上游石油和天然气行业，用于连续、在线、实时的油气水流量测量，无需流体分离。MPFM通常由相分数（持液率）和速度（或流速）测量组成。希望在测量位置具有均匀的流动，以便相分数测量具有代表性。通常安装水平盲三通管段，以使下游基于文丘里管的立式流量计中的流量均匀化；然而，关于水平盲三通深度（HBD）对流动均匀性的影响，几乎没有可用的信息。此外，从水平盲三通出口通向文丘里管入口的文丘里管垂直入口长度（VEL）是可能影响下游相位分布的其他设计参数。相分数测量原理需要液体性质（例如水的盐度）。当地丰富的液体使水平盲三通成为
A multiphase flowmeter (MPFM) is used in the upstream oil and gas industryfor continuous, in-line, real-time, oil-gas-water flow measurement withoutfluid separation. An MPFM typically consists of phase-fraction (holdup) andvelocity (or flow rate) measurements. It is desirable to have homogeneous flowat the measurement location so that the phase-fraction measurement isrepresentative. A horizontal blind-tee pipe-section is often installed tohomogenize flow in the downstream vertical Venturi-based flowmeters; however,little information is available on the effect of horizontal blind-tee depth(HBD) on flow homogeneity. In addition, the Venturi vertical entrance length(VEL) leading to the Venturi inlet from the horizontal blind-tee outlet isanother design parameter that may potentially affect the downstream phasedistribution. The phase-fraction measurement principle requires liquidproperties (e.g. water salinity). The local liquid richness makes thehorizontal blind-tee an ideal location for measuring liquid properties;however, an excessive HBD may affect the reliability of the measurements ofliquid properties, because local vortices may degrade liquid measurementrepresentativeness if the local liquid velocity is too low. This study uses acomputational fluid dynamics approach to evaluate the effect of HBD and VEL onmultiphase flow measurement, including the Venturi differential-pressure, theVenturi inlet and the throat phase-fraction, and the local liquid-property atthe end of a horizontal blind-tee. The computational results are validated withexperimental data collected in a multiphase flow facility. Appropriate HBD andVEL are recommended.
论文链接：http://arxiv.org/pdf/2303.13426v1
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