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<p>As an efficient and stable fluid delivery device, the ejector plays a critical role in various gas supply systems. However, existing ejector designs often fail to meet performance requirements under all operating conditions. This study focuses on optimizing the ejector structure for applications involving high flow rates and limited installation space, thereby expanding its applicability. The key geometric dimensions of the ejector were determined using the Sokolov method. A three-dimensional fluid simulation model was developed and validated through experimental testing. Under various operating conditions, the effects of Nozzle Exit Position (NXP), mixing chamber diameter (D<sub>m</sub>), mixing chamber length (L<sub>m</sub>), and Flow-Distributing Net curvature (K) on ejector performance were analyzed. The optimal structural parameters that meet the design requirements were identified. The results show that when the primary flow pressure is 350&#xa0;kPa, the optimal design parameters for the ejector are NXP = 15&#xa0;mm, D<sub>m</sub> = 60&#xa0;mm, L<sub>m</sub> = 60&#xa0;mm, and K = 0. These values yield the best overall performance. This research provides valuable technical support for the application of ejectors in gas fuel supply systems.</p>

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Structural Design and Performance Optimization of High-Flow Multi-Hole Nozzle Ejectors

  • 期刊论文

  • 发表日期：

    2026年3月30日

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  • Huali Zhang,
  • Lili Jiao,
  • Xuewen Zhang,
  • Xiang Li,
  • Peiyong Ni,
  • Zhimin Xu

摘要

As an efficient and stable fluid delivery device, the ejector plays a critical role in various gas supply systems. However, existing ejector designs often fail to meet performance requirements under all operating conditions. This study focuses on optimizing the ejector structure for applications involving high flow rates and limited installation space, thereby expanding its applicability. The key geometric dimensions of the ejector were determined using the Sokolov method. A three-dimensional fluid simulation model was developed and validated through experimental testing. Under various operating conditions, the effects of Nozzle Exit Position (NXP), mixing chamber diameter (Dm), mixing chamber length (Lm), and Flow-Distributing Net curvature (K) on ejector performance were analyzed. The optimal structural parameters that meet the design requirements were identified. The results show that when the primary flow pressure is 350 kPa, the optimal design parameters for the ejector are NXP = 15 mm, Dm = 60 mm, Lm = 60 mm, and K = 0. These values yield the best overall performance. This research provides valuable technical support for the application of ejectors in gas fuel supply systems.