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首页> 外文期刊>International journal of numerical methods for heat & fluid flow >Numerical simulation of two-phase flow regime in horizontal pipeline and its validation
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Numerical simulation of two-phase flow regime in horizontal pipeline and its validation

机译：水平管道两相流场的数值模拟及其验证

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Purpose - The purpose of this paper is to investigate oil-gas slug formation in horizontal straight pipe and its associated pressure gradient, slug liquid holdup and slug frequency. Design/methodology/approach - The abrupt change in gas/liquid velocities, which causes transition of flow patterns, was analyzed using incompressible volume of fluid method to capture the dynamic gas-liquid interface. The validity of present model and its methodology was validated using Baker's flow regime chart for 3.15 inches diameter horizontal pipe and with existing experimental data to ensure its correctness. Findings - The present paper proposes simplified correlations for liquid holdup and slug frequency by comparison with numerous existing models. The paper also identified correlations that can be used in operational oil and gas industry and several outlier models that may not be applicable. Research limitations/implications - The correlation may be limited to the range of material properties used in this paper. Practical implications - Numerically derived liquid holdup and holdup frequency agreed reasonably with the experimentally derived correlations. Social implications - The models could be used to design pipeline and piping systems for oil and gas production. Originality/value - The paper simulated all the seven flow regimes with superior results compared to existing methodology. New correlations derived numerically are compared to published experimental correlations to understand the difference between models.
机译：目的-本文的目的是研究水平直管中的油气团块形成及其相关的压力梯度，团块液体滞留率和团块频率。设计/方法/方法-使用不可压缩的流体体积方法分析了气/液速度的突然变化，该变化导致流动模式的转变，以捕获动态的气-液界面。使用贝克的3.15英寸直径水平管的流态图以及现有实验数据来验证本模型及其方法的有效性，以确保其正确性。发现-与许多现有模型相比，本文提出了液体滞留率和段塞频率的简化相关性。本文还确定了可用于石油和天然气行业的相关性，以及一些可能不适用的异常模型。研究局限性/意义-相关性可能限于本文使用的材料特性范围。实际意义-数值得出的液体持留率和持留频率与实验得出的相关性合理吻合。社会意义-这些模型可用于设计用于石油和天然气生产的管道和管道系统。原创性/价值-与现有方法相比，本文模拟了所有七个流态，并具有优异的结果。将数值得出的新相关性与已发布的实验相关性进行比较，以了解模型之间的差异。

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