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Design principles for centrifugal compressor diffusers based on the use of velocity distribution.

Number: 0430

Author(s) : KALINKEVYCH M., LAZARENKO A., RADCHENKO M.

Summary

This paper describes the design principles of diffusers based on physical and mathematical models of the flow of swirling viscous compressed gas. According to the presented method, the diffusers’ design is based on the preseparation condition of the boundary layer along one of the outer surfaces. Numerical and experimental research was performed for different compressor stages. Conducted experimental calculation studies and comparison of design and experimental characteristics of diffusers and flow parameters in diffusers confirm the efficiency of the diffuser, which was designed using the presented method and the adequacy of mathematical models with the physical processes of gas flow in diffusers. A new method of designing the vane diffusers and channel diffusers with a predetermined velocity distribution on vane surfaces provides an improvement in the gas-dynamic characteristics of diffusers compared to traditional geometry diffusers.

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Pages: 8

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Details

  • Original title: Design principles for centrifugal compressor diffusers based on the use of velocity distribution.
  • Record ID : 30028228
  • Languages: English
  • Subject: Technology
  • Source: 10th IIR Conference on Compressors and Refrigerants.
  • Publication date: 2021/01/13
  • DOI: http://dx.doi.org/10.18462/iir.compr.2021.0430
  • Document available for consultation in the library of the IIR headquarters only.

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