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- W2991852382 abstract "In the present paper, a compressor with variable inlet configuration upstream of the compressor wheel was investigated to improve the compressor low-end performance. As a concept study, the variable inlet configuration was assumed to be a variable orifice plate which can reduce the compressor inlet flow area when it is activated. The compressor performance with and without the initial orifice plate was assessed quantitatively using both numerical and experimental methods. The results indicated that the initial orifice plate design can improve the compressor efficiency at low speed and flow rate condition. Different orifice plate designs with different setting angles to the compressor inlet main flow direction and different radial heights were also numerically studied. It was found that: (1) changing the orifice plate setting angle from 90° for the initial design to 67° can improve compressor efficiency about 0.56% at low flow rate condition; (2) increasing the orifice plate radial height from 16% of the compressor inlet radius for the initial design to 27% can improve the compressor efficiency by 1.78% at near surge condition and extend surge margin by 9%. The results indicated that the radial height has larger effects on compressor performance than the setting angle at near surge flow rate. While increasing the orifice plate height variation can further improve compressor low-end efficiency and surge margin, there is an increased complexity of the actuation and control system." @default.
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- W2991852382 date "2020-02-01" @default.
- W2991852382 modified "2023-09-30" @default.
- W2991852382 title "Investigation of variable orifice plate design for centrifugal compressor low-end performance improvement" @default.
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- W2991852382 doi "https://doi.org/10.1016/j.ast.2019.105585" @default.
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