Study on the Influence of Meridional Channel to Centrifugal Compressor Performance

Jie Wang; Dong Wang; Wen Xiang Cai; Ke Gong

doi:10.4028/www.scientific.net/AMM.220-223.592

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 220-223Study on the Influence of Meridional Channel to...

Study on the Influence of Meridional Channel to Centrifugal Compressor Performance

Abstract:

The meridional channel has an important effect on the flow properties of centrifugal compressor. High performance meridional channel can be obtained by determining Bezier curves, which can realize local optimization to the airfoil expediently. Three kinds of meridional channel model are established basing on Bezier theory. A method to calculate the meridional channel width is proposed using the expression of UG and the distribution law of inscribed circle and stream surface is given as well. By means of numerical simulation, the effects on the flow capacity of different variation of inscribed circle and stream surface are compared in the same inlet and outlet geometric parameters. The result indicates that reasonable design of meridional channel increases the efficiency, improves the blockage point flow significantly, and provides with a broader and stable operating range to compressor.