Volute-induced distortion of the flow field remarkably exacerbates the flow stability of turbocharger centrifugal compressors; hence, reducing the flow field distortion by modifying the volute design is of great significance. This study investigated the influence of volute design on the flow field distortion and flow stability of turbocharger centrifugal compressors. Volutes with different throat areas and different area-to-radius ratio ( A θ / R m ) distributions were designed, and their performances were analyzed via both numerical and experimental methods. The results show that the throat area and the A θ / R m distribution significantly influence the volute-induced pressure distortion. By modifying the volute design, the amplitude of the pressure distortion can be reduced from 8.82% to 3.22%, and the stable flow range can be extended from 49.8% to 58.7%. Additionally, to reduce flow field distortion, the throat area should be appropriate to guarantee a match between the volute and upstream components, and the A θ / R m distribution near the volute tongue should have a moderate slope. This study provides design methods for reducing flow field distortion by modifying the volute, and it also verifies the belief that smaller flow field distortion is beneficial to the flow stability of compressors.


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    Title :

    Influence of volute design on flow field distortion and flow stability of turbocharger centrifugal compressors


    Contributors:


    Publication date :

    2019-02-01


    Size :

    11 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English






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