Although significant advances have been made in tandem-blade technology for axial compressors, few efforts were devoted to its application in centrifugal compressors. Based on detailed computational fluid dynamics simulations and sensitivity analysis, multiobjective design optimization is conducted for a tandem impeller. An optimized tandem impeller, for which the objectives are all better than those of the baseline, is fabricated and tested on a high-speed centrifugal compressor rig. The numerical results show that the baseline tandem impeller has more uniform discharge flow but lower efficiency than the corresponding splitter impeller. The geometries of the inducer blade profile and inducer–exducer gap are found to have the greatest impact on the tandem impeller efficiencies. By optimization, the tandem impeller efficiency can be increased through reduced curvature of the blade profile at the inducer hub, S-shaped blade angle distribution at the inducer tip, and increased blade angle at the exducer tip near the leading edge. The measured performance of the centrifugal compressor with the optimized tandem impeller agrees well with the computational fluid dynamics calculations, and the compressor peak efficiency is 0.796 at the design speed (45,000 rpm).


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Design Optimization and Experimental Study of Tandem Impeller for Centrifugal Compressor


    Contributors:
    Ju, Y. P. (author) / Zhang, C. H. (author)

    Published in:

    Publication date :

    2014-09-12


    Size :

    12 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Modeling and Optimization of the Impeller Fillet in Centrifugal Compressor

    He, K. / Lin, Z. / Yuan, X. | British Library Conference Proceedings | 2011



    Centrifugal Compressor Performance Improvement through Multi Splitter Impeller

    Malik, Adil / Zheng, Qun / Qureshi, Shafiq R. et al. | Online Contents | 2019


    Aerodynamics of a Transonic Centrifugal Compressor Impeller

    Ibaraki, Seiichi | Online Contents | 2003