Departmental Bulletin Paper 超小型遠心圧縮機内部流れの数値解析:羽根車入口 Shroud 側子午面形状の影響

米村, 淳

57pp.1 - 8 , 2016-03-24 , 法政大学大学院 理工学・工学研究科
In order to apply an impeller with a two-dimensional blade to an ultra micro centrifugal compressor constituting an ultra micro gas turbine, it is necessary to clarify the influences of various design parameters specifying the shape of ompressor on the flow behavior and the loss generation in the compressor. In this study, six types of compressors, which were same in the impeller but different in the meridional configuration of the suction pipe and the shroud casing at the impeller inlet, were designed and the flows in these compressors were analyzed numerically. The computed results clarified that the meridional configuration of the shroud surface at the impeller inlet influenced the flow behavior and the loss generation mechanism, and consequently the aerodynamic performance of the compressor. Key Words : Centrifugal Compressor, Ultra Micro Gas Turbine, Two-dimensional Blade, Meridional Configuration, Numerical Analysis

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