Performance analysis of a water ejector using Computational Fluid Dynamics (CFD) simulations and mathematical modeling

Marum, Victor Jorge de Oliveira; Reis, Lívia Bueno; Maffei, Felipe Silva; Ranjbarzadeh, Shahin; Korkischko, Ivan; Gioria, Rafael dos Santos; Meneghini, Júlio Romano

doi:10.1016/j.energy.2021.119779

Cited by 15 publications

(3 citation statements)

References 21 publications

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“…Mixing zone conditions, especially the peak-efficiency operational condition. De Oliveira Marum et al [10] mentioned that the accuracy of the k-ω model was unsatisfactory. A high-pressure water jet was used by Cunningham [11] as the primary flow to compress air.…”

Section: Suction Chambermentioning

confidence: 99%

“…They also concluded that the performance of the water jet pump can be adequately described using 1D theoretical formulation. De Oliveira Marum et al [10] performed axisymmetric CFD simulations to calculate the friction loss coefficients of each part of the water jet pump by fitting the CFD data to a quasi-1D mathematical model adapted from [9]. The efficiency, static pressure profile along the length of the jet pump and static pressure at different radial cross sections were calculated by CFD model coupled with various turbulence models.…”

Section: Introductionmentioning

confidence: 99%

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1D modelling of the liquid-gas jet pump performance

Ravan Ghalati,

Croquer,

Nesreddine

et al. 2023

Progress in Canadian Mechanical Engineering. Volume 6

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The performance of a liquid-gas jet pump, which uses a high-velocity liquid flow to compress and entrain a gas flow, can be divided into two modes; on-design and off-design. The present paper investigates the mentioned modes of performance using a 1D model based on the conservation equations of mass, momentum and energy. Comparisons in terms of compression ratio and efficiency between the present model and experimental data show that the 1D model is capable of predicting the behavior of the liquid-gas jet pump for both modes. The effects of the primary flow velocity head, and areas of the mixing throat and diffuser on the performance of the jet pump are also investigated through a sensitivity study.

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Section: Suction Chambermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

1D modelling of the liquid-gas jet pump performance

Ravan Ghalati,

Croquer,

Nesreddine

et al. 2023

Progress in Canadian Mechanical Engineering. Volume 6

View full text Add to dashboard Cite

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“…The departments where CFD is most often used are laboratories for hydrodynamics and aerodynamics to obtain results for pressure, velocity and the possibility of predicting fluid motion [1,2]. CFD provides a detailed description of the flow field by numerical solutions [3]. CFD technique is proven to be an efficient tool to overcome some limitations of 1D mathematical approach [4].…”

Section: Introductionmentioning

confidence: 99%

CFD Simulation Study for Abrasive Waste Management Using Water Eductors for Abrasive Waterjet Cutting Collector Tanks

Perianu,

Marin-Corciu,

Geana

et al. 2023

KEM

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The work is mainly aimed at solving technical problems in the field of unconventional fluid-jet processing, a field in which ISIM Timisoara has developed technical and technological expertise. A crucial part of an effective cleanup process is the secure transportation and disposal of sludge-type materials and related clean-up waste in the industry to a designated site and then to waste treatment plants, as ecological regulations continue to evolve. As a result, experts strive to discover the most state of the art and effective methods for storing and cleaning produced waste.The technical solution studied in this paper consists in obtaining an efficient system for the evacuation of the waste water and abrasive mixture, elements generated during abrasive waterjet cutting, in the shortest time, without stopping the technological cutting process.In this sense, a water eductor system is studied, by carrying out a preliminary experimental program, for use in abrasive waterjet installations collector tanks, by CFD simulation process.The operating parameters of eductor-type mixing nozzles and their effect on the liquid abrasive mixture in a tank of an abrasive-water jet cutting system were analysed.

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