Recent Advances in Numerical Simulation of Ejector Pumps for Vacuum Generation—A Review

Jaber Sadeghiseraji (), Mercè Garcia-Vilchez, Robert Castilla and Gustavo Raush
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Jaber Sadeghiseraji: CATMech—Department of Fluid Mechanics, Universitat Politecnica de Catalunya, ES-08222 Terrassa, Catalunya, Spain
Mercè Garcia-Vilchez: CATMech—Department of Fluid Mechanics, Universitat Politecnica de Catalunya, ES-08222 Terrassa, Catalunya, Spain
Robert Castilla: CATMech—Department of Fluid Mechanics, Universitat Politecnica de Catalunya, ES-08222 Terrassa, Catalunya, Spain
Gustavo Raush: CATMech—Department of Fluid Mechanics, Universitat Politecnica de Catalunya, ES-08222 Terrassa, Catalunya, Spain

Energies, 2024, vol. 17, issue 17, 1-28

Abstract: This review paper provides an overview of recent advances in computational fluid dynamics (CFD) simulations of ejector pumps for vacuum generation. It examines various turbulence models, multiphase flow approaches, and numerical techniques employed to capture complex flow phenomena like shock waves, mixing, phase transitions, and heat/mass transfer. Emphasis is placed on the comprehensive assessment of flow characteristics within ejectors, including condensation effects such as nucleation, droplet growth, and non-equilibrium conditions. This review highlights efforts in optimizing ejector geometries and operating parameters to enhance the entrainment ratio, a crucial performance metric for ejectors. The studies reviewed encompass diverse working fluids, flow regimes, and geometric configurations, underscoring the significance of ejector technology across various industries. While substantial progress has been made in developing advanced simulation techniques, several challenges persist, including accurate modeling of real gas behavior, phase change kinetics, and coupled heat/mass transfer phenomena. Future research efforts should focus on developing robust multiphase models, implementing advanced turbulence modeling techniques, integrating machine learning-based optimization methods, and exploring novel ejector configurations for emerging applications.

Keywords: ejector pumps; vacuum generation; computational fluid dynamics (CFD); multiphase flow modeling; turbulence modeling; optimization; condensation effects (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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