Use of computational fluid dynamics to develop improved one-dimensional thermodynamic analyses of refrigerant screw compressors

This paper illustrates the use of computational fluid dynamics (CFD) to analyze selected features of a refrigeration screw compressor. Specifically, we consider leakage flows between the housing and the tips of the male rotor and through the blowhole, a leak path formed by the two rotors and the housings together. In addition to revealing the nature of the flows in these leak paths, this study provided data for the development of simplified leakage models that can be used in an existing one-dimensional thermodynamic simulation.