A Review of Design Considerations of Centrifugal Pump Capability for Handling Inlet Gas-Liquid Two-Phase Flows
TypeArticles dans des revues avec comité de lecture
Most of the pumps working under two phase flows conditions are used in petroleum industry applications, like electrical submersible pumps (ESP) for hydrocarbon fluids, in chemistry, nuclear industries and in agriculture for irrigation purposes as well. Two-phase flows always deteriorate overall pump performances compared with single flow conditions. Several papers have been published aiming to understand flow physics and to model all the main mechanisms that govern gas pocket formation and surging phenomena. These mechanisms depend on the pump type, the impeller geometry, the rotational speed, design and off-design liquid flow rate conditions, the volumetric gas fraction, the fluid properties and the inlet pressure. In the present paper, a review on two phase performances from various centrifugal pumps designs is presented, mainly based on experimental results. The main focus is devoted to detect the significant geometrical parameters that: (1) Modify the pump head degradation level under bubbly flow regime assumption; (2) Allow single stage centrifugal pumps keep working under two-phase flow conditions with high inlet void fraction values before pump shut down, whatever the pump performance degradations and liquid production rates should be. Because most of the published experimental studies are performed on dedicated laboratory centrifugal pump models, most of the present review is based on air-water mixtures as the working fluid with inlet pressures close to atmospheric conditions. The following review supposes that gas phase is considered as a non-condensable perfect gas, while the liquid phase is incompressible. Both phases are isolated from external conditions: neither mass nor heat transfer take place between the phases.
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Experimental Investigations on the Inner Flow Behavior of Centrifugal Pumps under Inlet Air-Water Two-Phase Conditions SI, Qiaorui; ZHANG, Haoyang; BOIS, Gérard; ZHANG, Jinfeng; CUI, Qianglei; YUAN, Shouqi (MDPI AG, 2019)Centrifugal pumps are widely used and are known to be sensitive to inlet air-water two-phase flow conditions. The pump performance degradation mainly depends on the changes in the two-phase flow behavior inside the pump. ...
Investigation on centrifugal pump performance degradation under air-water inlet two-phase flow conditions SI, Qiaorui; CUI, Qianglei; ZHANG, Keyu; YUAN, Jianping; BOIS, Gérard (EDP Sciences, 2018)In order to study the flow characteristics of centrifugal pumps when transporting the gas-liquid mixture, water and air were chosen as the working medium. Both numerical simulation and experimental tests were conducted on ...
Air-water two-phase flow experimental and numerical analysis in a low specific speed centrifugal pump SI, Qiaorui; BOIS, Gérard; ZHANG, Keyu; YUAN, Jianping (European Turbomachinery Society, 2017)The paper presents experimental and numerical investigations performed on a single stage, single-suction, horizontal-orientated centrifugal pump in air-water two-phase non condensable flow conditions. Experimental test ...
Experimental and numerical studies on flow characteristics of centrifugal pump under air-water inflow SI, Qiaorui; HE, Wenting; BOIS, Gérard; CUI, Qianglei; YUAN, Shouqui; ZHANG, Keyu (International Journal of Fluid Machinery and Systems, 2019)A two-phase liquid pumping test ring is built to study the flow induced characteristics of centrifugal pump under the air-water flow working condition. Pump performances are measured under different flow rates and different ...
Experimental and Numerical Investigation on a Centrifugal Pump under Air-Water Two-Phase Flow Condition SI, Qiaorui; BOIS, Gérard; ZHANG, Keyu; YUAN, Shouqui (Springer, 2009)Experimental and numerical investigations have been performed on a single stage, single-suction, horizontal-orientated centrifugal pump under air-water two-phase non condensable flow conditions. Experimental test loop ...