Performance comparison and erosion prediction of jet pumps by using a numerical method

Song, Xue Guan; Park, Joon Hong; Kim, Seung Gyu; Park, Young Chul

doi:10.1016/j.mcm.2011.06.040

Cited by 45 publications

(14 citation statements)

References 12 publications

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“…According to the researches of Luiset et al [22] and Song et al [23], tiny droplets will cause erosion in the inner wall of ejector and seriously impact ejector performance. Jia et al [24][25][26], Chen et al [27] and Sag et al [28] drew the conclusion that the nozzle structure has a significant influence on ejector performance; however, their researches ignored the homogeneous condensation that occurs in the primary nozzle.…”

Section: Introductionmentioning

confidence: 99%

Influences of area ratio and surface roughness on homogeneous condensation in ejector primary nozzle

Wang

Zou

et al. 2017

Energy Conversion and Management

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Section: Introductionmentioning

confidence: 99%

Influences of area ratio and surface roughness on homogeneous condensation in ejector primary nozzle

Wang

Zou

et al. 2017

Energy Conversion and Management

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“…It was concluded that the optimum ratio of the mixing length to nozzle diameter (L m /D n ) is 2-3.5. Several approximation methods for optimization are being used and comparative studies are presented in the literatures [12][13][14] which carried out numerical analysis of the jet pump and presented an improved design, which showed higher performance in terms of mass flow ratio, pressure ratio and efficiency under specified working conditions. Eves et al [15] conducted optimization of supersonic jet pump through computational fluid dynamics (CFD) analysis and genetic algorithm to maximize the entrained flow rate under constrained primary flow; however, there is scarcity of literature on systematic multiobjective optimization of jet pump to find out the optimal performance and corresponding design parameters.…”

Section: Introductionmentioning

confidence: 99%

Energy Efficient Design of a Jet Pump by Ensemble of Surrogates and Evolutionary Approach

Husain

Sonawat

Mohan

et al. 2016

International Journal of Fluid Machinery and Systems

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Energy systems working coherently in different conditions may not have a specific design which can provide optimal performance. A system working for a longer period at lower efficiency implies higher energy consumption. In this effort, a methodology demonstrated by a jet pump design and optimization via numerical modeling for fluid dynamics and implementation of an evolutionary algorithm for the optimization shows a reduction in computational costs. The jet pump inherently has a low efficiency because of improper mixing of primary and secondary fluids, and multiple momentum and energy transfer phenomena associated with it. The high fidelity solutions were obtained through a validated numerical model to construct an approximate function through surrogate analysis. Pareto-optimal solutions for two objective functions, i.e., secondary fluid pressure head and primary fluid pressure-drop, were generated through a multi-objective genetic algorithm. For the jet pump geometry, a design space of several design variables was discretized using the Latin hypercube sampling method for the optimization. The performance analysis of the surrogate models shows that the combined surrogates perform better than a single surrogate and the optimized jet pump shows a higher performance. The approach can be implemented in other energy systems to find a better design.

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“…Always restricts the solid-liquid two-phase transportation development and application of centrifugal pump. [1][2] Due to the different parameters of size, density and the concentration of the solid, combined with complex geometry and impeller pump flow channel in highspeed rotating factors, lead to the solid-liquid two-phase flow inside of the pump is very complex. [3][4] This article mainly research to solid-liquid mixed transportation flow inside the channel-type pump.…”

Section: Introductionmentioning

confidence: 99%

Performance analysis on solid-liquid mixed flow in a centrifugal pump

Ning

Wang

2016

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. In order to study the solid-liquid mixed flow hydraulic characteristics of centrifugal pump, the Pro/E software was used for three-dimensional modeling of centrifugal pump chamber. By using the computational fluid dynamics software CFX, the numerical simulation calculation of solid-liquid two-phase flow within whole flow passage of centrifugal pump was conducted. Aim at different particle diameters, the Reynolds-averaged N-S equations with the RNG k-Ɛ turbulence model and SIMPLEC algorithm were used to simulate the two-phase flow respectively on the condition of different volume fraction. The influence of internal flow characteristic on pump performance was analyzed. On the conditions of different particle diameter and different volume fraction, the turbulence kinetic energy and particle concentration are analyzed. It can be found that the erosion velocity ratio on the flow channel wall increases along with the increasing of the volume fraction

show abstract

Performance comparison and erosion prediction of jet pumps by using a numerical method

Cited by 45 publications

References 12 publications

Influences of area ratio and surface roughness on homogeneous condensation in ejector primary nozzle

Influences of area ratio and surface roughness on homogeneous condensation in ejector primary nozzle

Energy Efficient Design of a Jet Pump by Ensemble of Surrogates and Evolutionary Approach

Performance analysis on solid-liquid mixed flow in a centrifugal pump

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