State of the Art on Two-Phase Non-Miscible Liquid/Gas Flow Transport Analysis in Radial Centrifugal Pumps-Part A: General Considerations on Two-Phase Liquid/Gas Flows in Centrifugal Pumps

IF 1.3 Q2 ENGINEERING, AEROSPACE

International Journal of Turbomachinery, Propulsion and Power Pub Date : 2023-05-10 DOI:10.3390/ijtpp8020016

G. Bois

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引用次数: 1

Abstract

Gas–liquid mixtures are present in numerous industrial applications, such as in the process industry, oil production and transport with natural gas, deep-sea extraction, and irrigation. Any pump may have to carry multiphase flows. However, the present document is related to non-miscible liquid/gas flow transport analysis in centrifugal pumps because which topic can be a more challenging task compared with axial and mixed flow machines due to specific body force and buoyancy actions and large density differences between the phases. The present document first introduces the main usual gas–liquid two-phase definitions and simplifications. A dimensional analysis introduces the main flow variables and parameters that are used for pumps. Basic physical aspects of flow motion in an impeller channel are explained, and a rapid description of two-phase flow patterns in radial flow pumps is described. Finally, a review of simplified empirical and semi-empirical analytical models is proposed with their limitations.

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径向离心泵内两相非混相液/气流动输运分析的研究现状——第一部分:离心泵内两相液/气流动的一般考虑

气液混合物存在于许多工业应用中，如加工工业、石油生产和天然气运输、深海开采和灌溉。任何泵都可能需要输送多相流。然而，本文件涉及离心泵中的非混相液体/气体流动输运分析，因为由于特定的身体力和浮力作用以及相之间的大密度差异，与轴向和混合流机器相比，该主题可能更具挑战性。本文件首先介绍了常用的气液两相的主要定义和简化。量纲分析介绍了泵的主要流量变量和参数。解释了叶轮通道中流动运动的基本物理方面，并描述了径向流泵中两相流模式的快速描述。最后，回顾了简化的经验和半经验分析模型及其局限性。

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