Investigation of Off-Design Performance of Vaned Diffusers in Centrifugal Compressors - Part II : Low Solidity Cascade Diffuser -

원심압축기용 베인디퓨져의 탈설계점 성능연구 - 제2부 : 솔리디티가 작은 익렬디퓨져 -

As the second part of the author's study, off-design behavior of the design and performance parameters in the low-solidity cascade diffuser in a centrifugal compressor is investigated. The experimental flange-to-flange compressor map serves the validity of application of the present CFD work to the detailed investigation of the low-solidity cascade diffuser. Some meanline design and performance parameters as well as three-dimensional internal secondary flow fields are studied when the flow rate is changed from deep choke to stall.