Prediction of Air-Water Two-Phase Flow Performance of a Centrifugal Pump Based on One-Dimensional Two-Fluid Model

Minemura, Kiyoshi; Uchiyama, Tomomi; Shoda, Shinji; Egashira, Kazuyuki

doi:10.1115/1.2820652

Cited by 44 publications

(26 citation statements)

References 13 publications

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“…F v is the virtual mass force per unit volume. Minemura et al [84] also studied the performance of centrifugal pumps in the nuclear industry under air-water two phase flow conditions with a low inlet GVF (<10%). Based on energy change in the flow from the rotating impeller to the stationary volute, a 1D, two-fluid model considering fluid viscosity and air-phase compressibility in a rotating impeller was proposed.…”

Section: One-dimension Two-fluid Modelingmentioning

confidence: 99%

“…By implementing the standard k-ε turbulence model and non-equilibrium wall function into RANS equations, the author confirmed that the rising pump head was due to the transition from hydraulically rough regime to hydraulically smooth regime. Zhu et al [84] solved a set of 3D, steady-state RANS equations with standard SST turbulence model using the commercial CFD solver ANSYS CFX by employing the frozen-rotor technique. Their results matched correspondent experimental data well.…”

Section: Three-dimension Computational Fluid Dynamics (Cfd)mentioning

confidence: 99%

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A Review of Experiments and Modeling of Gas-Liquid Flow in Electrical Submersible Pumps

Zhu

Zhang

2018

Energies

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As the second most widely used artificial lift method in petroleum production (and first in produced amount), electrical submersible pump (ESP) maintains or increases flow rate by converting kinetic energy to hydraulic pressure of hydrocarbon fluids. To facilitate its optimal working conditions, an ESP has to be operated within a narrow application window. Issues like gas involvement, changing production rate and high oil viscosity, greatly impede ESP boosting pressure. Previous experimental studies showed that the presence of gas would cause ESP hydraulic head degradation. The flow behaviors inside ESPs under gassy conditions, such as pressure surging and gas pockets, further deteriorate ESP pressure boosting ability. Therefore, it is important to know what parameters govern the gas-liquid flow structure inside a rotating ESP and how it can be modeled. This paper presents a comprehensive review on the key factors that affect ESP performance under gassy flow conditions. Furthermore, the empirical and mechanistic models for predicting ESP pressure increment are discussed. The computational fluid dynamics (CFD)-based modeling approach for studying the multiphase flow in a rotating ESP is explained as well. The closure relationships that are critical to both mechanistic and numerical models are reviewed, which are helpful for further development of more accurate models for predicting ESP gas-liquid flow behaviors.

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Section: One-dimension Two-fluid Modelingmentioning

confidence: 99%

Section: Three-dimension Computational Fluid Dynamics (Cfd)mentioning

confidence: 99%

A Review of Experiments and Modeling of Gas-Liquid Flow in Electrical Submersible Pumps

Zhu

Zhang

2018

Energies

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“…Noghrehkar et al applied the compressible two-fluid model to predict the performance of a centrifugal pump and the theoretical head was deduced by neglecting hydraulic loss [3]. Minemura et al proposed a model considering fluid viscosity and air compressibility [4]. The numerical model was applied to solve the case of a centrifugal pump.…”

Section: Introductionmentioning

confidence: 99%

Extended two-fluid model applied to analysis of bubbly flow in multiphase rotodynamic pump impeller

Wang

Cao

2009

Front. Mech. Eng. China

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This paper presents an extended two-fluid model based on the Navier-Stokes equations and the standard k -ε turbulence model, to simulate the threedimensional air-water bubbly flow in turbo machinery. In the governing equations, the drag force and added mass force are added and the additional source terms arising from fluctuations of gas volume fraction are considered. The discrete equations are solved using a developed twophase semi-implicit method for pressure-linked equations, consistent (SIMPLEC) algorithm in body-fitted coordinates with a staggered grid system. Simulation is then carried out for the pure liquid flow and air-water two-phase flow with the inlet gas volume fraction being 15% in a multiphase rotodynamic pump impeller and the pump head performance is predicted. Comparison with experimental results shows the reliability and commonality of the numerical model.

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“…According to Minemura and others, increase of the ratio up to 6 -7% reduces head gradually to several percent and then reduces the head rapidly to zero head within the ratio nearly 10% in case of a centrifugal pump (5) . The gas to gas-water mixture volume ratio of 10% corresponds to that in condition of −0.25 m of the NPSH av at 151.3…”

Section: Influence Of Gas Presence At Impeller Inletmentioning

confidence: 99%

High Temperature NPSH and Its Application for a Feedwater System

Manabe

Miyagawa

2006

JSME international journal. Ser. B, Fluids and thermal engineer

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Eight hundred MWe class PWR turbine-generators operated smoothly and continuously at sudden load reduction from full load to house load, maintaining NPSH of the feedwater booster pumps through transition even though the available NPSH never exceeded zero. NPSH of the pump at 151.3• C, at which the available NPSH was minimal during transition, was evaluated as a slightly negative value, in spite of a positive value at room temperature, applying both the Ruggeri-Moore method extended to the negative area on condition of gas venting out of the system, using data of both room temperature and 95• C of a model pump facility, and another restriction by gas presence at the impeller inlet. The above evaluated high temperature NPSH demonstrated successful operation of the units equipped with a low static suction head yielding zero available NPSH during transition, resulting in alteration of the design criteria of the feedwater system and thereby contributing to possible cost reduction.

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Prediction of Air-Water Two-Phase Flow Performance of a Centrifugal Pump Based on One-Dimensional Two-Fluid Model

Cited by 44 publications

References 13 publications

A Review of Experiments and Modeling of Gas-Liquid Flow in Electrical Submersible Pumps

A Review of Experiments and Modeling of Gas-Liquid Flow in Electrical Submersible Pumps

Extended two-fluid model applied to analysis of bubbly flow in multiphase rotodynamic pump impeller

High Temperature NPSH and Its Application for a Feedwater System

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