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Performance study on the innovative application of radial oscillation tubes in gas wave ejectors

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  • Zhao, Yiming
  • Wang, Zongrui
  • Li, Haoran
  • Hu, Dapeng

Abstract

Gas wave ejectors (GWEs) have simple structures, operate at relatively low rotation speeds, and exhibit high energy transfer efficiency, offering a wide range of potential applications. To address the performance shortcomings of axial-GWEs under high compression ratios, this paper presents a radial flow channel gas wave ejection technology featuring coupled centrifugal pressure enhancement. By establishing a theoretical calculation method for gas-wave centrifugal coupled pressure enhancement, this research investigates the functional characteristics of this novel gas wave ejection technology using a three-dimensional numerical model and experimental platform for radial-GWEs. Theoretical calculations reveal that at a design rotation speed of 3500 rpm and an efficiency coefficient of 0.9, the medium-pressure gas production pressure can be improved by up to 16.56 kPa. Numerical analysis indicates that centrifugal forces within the radial wave rotor flow channel significantly changed wave system intensity, which significantly reduced expansion zone pressure and consequently enhanced pressure enhancement capability. Experimental results demonstrate that under design conditions (expansion ratio 1.8, compression ratio 1.4), the radial-GWEs achieved a 21.42 % relative improvement in ejection efficiency compared to the axial-GWEs, and a 28.06 % relative improvement in total efficiency. Furthermore, based on fundamental performance curves under various operating conditions, the radial-GWEs demonstrate a broader applicable operating range. At a rotation speed of 3500 rpm, the maximum total efficiency reaches 53.52 %. These research findings provide valuable insights for practical applications.

Suggested Citation

  • Zhao, Yiming & Wang, Zongrui & Li, Haoran & Hu, Dapeng, 2026. "Performance study on the innovative application of radial oscillation tubes in gas wave ejectors," Energy, Elsevier, vol. 343(C).
    • Handle: RePEc:eee:energy:v:343:y:2026:i:c:s0360544225054349
    DOI: 10.1016/j.energy.2025.139791
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    References listed on IDEAS

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