Although centrifugal compressors have been in use for over a century, much empiricism is still present in the compressor(or pump) design process. Therefore, a better understanding is needed of the flow process inside ...Although centrifugal compressors have been in use for over a century, much empiricism is still present in the compressor(or pump) design process. Therefore, a better understanding is needed of the flow process inside their components(impeller, diffuser including vaneless and vaned, and volute casing). The article reviewed process for the experimental and numerical published researches concerning this issue and calculated the 3 D flow pattern in Krain’s centrifugal impeller using CFX Tascflow code with CFX Turbogrid for grid generation. Higher number of grid points is used and the tip clearance is simulated using five grid points. The results show good agreement with that measured by Krain. The CFX Tascflow code can be applied to the analsis of the complicated flow structures in centrifugal impeller.展开更多
文摘Although centrifugal compressors have been in use for over a century, much empiricism is still present in the compressor(or pump) design process. Therefore, a better understanding is needed of the flow process inside their components(impeller, diffuser including vaneless and vaned, and volute casing). The article reviewed process for the experimental and numerical published researches concerning this issue and calculated the 3 D flow pattern in Krain’s centrifugal impeller using CFX Tascflow code with CFX Turbogrid for grid generation. Higher number of grid points is used and the tip clearance is simulated using five grid points. The results show good agreement with that measured by Krain. The CFX Tascflow code can be applied to the analsis of the complicated flow structures in centrifugal impeller.
