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<p>The performance of jet pumps plays a key role in various engineering applications, and considerate the relationship between flow parameters and operational efficiency is crucial for system optimization. This study examines jet pump behavior by integrating experimental testing, numerical simulation via ANSYS FLUENT, and comparison with historical survey data. A physical jet pump model was considered with specific nozzle, mixing chamber, throat, and diffuser dimensions. The experiments were conducted toward varying elevation levels using a custom setup equipped through pressure gauges and flow control devices. Numerical simulations were executed using a pressure-based solver with SST k-ω turbulence model, integrating mesh independence studies and boundary ailment setups to ensure accuracy. Experimental outcomes revealed that efficiency increases with mass flow rate while pressure ratio decreases, with higher elevations reaching peak efficiencies around 33%. Numerical findings mirrored these trends, contribution smoother and more consistent efficiency reaching approximately 35% at high flow rates. Comparison with historic data confirmed these observations, display strong alignment in overall performance trends. The results confirm that CFD simulations can consistently capture the operational characteristics of jet pumps, present valuable insights for design improvements and supporting the use of numerical tools in future jet pump analysis.&#xa0;</p>

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Experimental and numerical study of a Water-Water ejector

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年7月10日

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  • Marwan Kabaly,
  • Hassan El-Gamal,
  • E. Saber,
  • Rola Afify

摘要

The performance of jet pumps plays a key role in various engineering applications, and considerate the relationship between flow parameters and operational efficiency is crucial for system optimization. This study examines jet pump behavior by integrating experimental testing, numerical simulation via ANSYS FLUENT, and comparison with historical survey data. A physical jet pump model was considered with specific nozzle, mixing chamber, throat, and diffuser dimensions. The experiments were conducted toward varying elevation levels using a custom setup equipped through pressure gauges and flow control devices. Numerical simulations were executed using a pressure-based solver with SST k-ω turbulence model, integrating mesh independence studies and boundary ailment setups to ensure accuracy. Experimental outcomes revealed that efficiency increases with mass flow rate while pressure ratio decreases, with higher elevations reaching peak efficiencies around 33%. Numerical findings mirrored these trends, contribution smoother and more consistent efficiency reaching approximately 35% at high flow rates. Comparison with historic data confirmed these observations, display strong alignment in overall performance trends. The results confirm that CFD simulations can consistently capture the operational characteristics of jet pumps, present valuable insights for design improvements and supporting the use of numerical tools in future jet pump analysis.