Advanced Compressor Loss Correlations, Part II:Experimental Verifications

[摘要] Reliable efficiency calculation of high-subsonic and transonic compressor stages requires adetailed and accurate prediction of the flow field within these stages. Despite the tremendousprogress in turbomachinery computational fluid mechanics, the compressor designer stilluses different loss correlations to estimate the total pressure losses and thus the efficiency ofthe compressor stage. The new shock loss model and the modified diffusion factor, developedin Part I, were implemented into a loss calculation procedure. In this part, correlationsfor total pressure loss, profile loss, and secondary loss coefficients are presented, using theavailable experimental data. Based on the profile loss coefficients, correlations were alsoestablished for boundary layer momentum thickness. These correlations allow the compressordesigner to accurately estimate the blade losses and therefore the stage efficiency.

[学科分类] 力学，机械学