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首页> 外文期刊>Journal of natural gas science and engineering >Experimental and numerical study of two-phase pressure drop in downhole shut-in valve with Unified Comprehensive Model formulation
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Experimental and numerical study of two-phase pressure drop in downhole shut-in valve with Unified Comprehensive Model formulation

机译：统一综合模型公式的井下截止阀两相压降实验与数值研究

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The Unified Comprehensive Model (UCM) formulation for two-phase flow identifies first the flow pattern, and applies subsequently the appropriate pressure drop calculation. In this work the UCM has been extended for dealing with the complex two phase flow in a shut-in valve. In particular, local two phase pressure drops were included where the loss coefficients were obtained from full 3D CFD simulations. The final mathematical model was solved by a least squares spectral element method. Two-phase flow simulations with the extended UCM were validated with experiments performed on a full scale mock-up of the valve. The suggested models provide a good estimation of the pressure drop. The predicted flow patterns from the UCM are also confirmed by the experiments. (C) 2015 Elsevier B.V. All rights reserved.
机译：用于两相流的统一综合模型（UCM）公式首先确定流型，然后应用适当的压降计算。在这项工作中，UCM已扩展为可处理关闭阀中复杂的两相流。特别是，包括局部两相压降，其中损失系数是从完整的3D CFD模拟获得的。最终的数学模型通过最小二乘谱元素法求解。扩展的UCM进行的两相流模拟已在阀门的完整模型上进行了实验验证。建议的模型可以很好地估计压降。实验也证实了来自UCM的预测流动模式。 （C）2015 Elsevier B.V.保留所有权利。

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