CFD-calculation method for vane diffusers of a centrifugal compressor stage

International Conference on Compressors and their Systems 2019

Petukhov, E.P.^1 ; Galerkin, Yu.B.^2 ; Rekstin, A.F.^2

Supercomputer Center Polytechnic Peter, Great St. Petersburg Polytechnic University, Polytechnical st. 29, St. Petersburg, Russia^1

RandD Laboratory Gas Dynamics of Turbo Machines Peter, Great St. Petersburg Polytechnic University, Polytechnical st. 29, St. Petersburg, Russia^2

关键词: Centrifugal compressor stage;    Centrifugal process;    Compressor characteristics;    Dynamic design method;    Numerical experiments;    Physical experiments;    Positive experiences;    Virtual wind tunnels;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/604/1/012051/pdf
DOI  :  10.1088/1757-899X/604/1/012051

来源: IOP

【 摘 要 】

Centrifugal process compressors consume huge amount of energy. The gas dynamic design methods are based on physical and numerical experiments. The methods improvement is an actual task. The theory of subsonic axial compressors is based on the results of wind tunnel tests of straight blade cascades. The modern trend is to substitute physical experiments with CFD calculations. There is positive experience of vaneless diffuser virtual wind tunnel test results (CFD calculations) that are inserted in the math model for compressor characteristic simulation. CFD calculations of vane diffusers also can be used to improve math model of a centrifugal stage but the calculation technology is more complicated. The Authors have investigated the problem and propose rational solution.