The flow losses in the veneless diffusers of centrifugal compressors is investigated. It is found that the total energy loss in vaneless diffusers is a function of Bsin2 α0 when inlet flow conditions and radius ratio between inlet and outlet are given. A wall friction coefficient equation is derived and a method of predicting the total energy loss excepting mixing loss is presented. A comparison is made between results obtained from this method and experimental data generated by the author as well as data from the literature. Good agreement is obtained.
A Method of Predicting the Energy Losses in Vaneless Diffusers of Centrifugal Compressors
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Dou, H. "A Method of Predicting the Energy Losses in Vaneless Diffusers of Centrifugal Compressors." Proceedings of the ASME 1989 International Gas Turbine and Aeroengine Congress and Exposition. Volume 1: Turbomachinery. Toronto, Ontario, Canada. June 4–8, 1989. V001T01A063. ASME. https://doi.org/10.1115/89-GT-158
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