In the design of centrifugal compressor impellers with splitter blades it is quite common to use the same blade shapes on the full and splitter blades with the splitters placed at the mid-pitch location. However, recent results using conventional design methodology have indicated that by moving the pitch wise location of the leading edge of the splitter it is possible to improve splitter performance.

The blade geometry on the full and splitter blades are designed by using a specified circulation distribution. By controlling the circulation (and therefore loading) distribution on the splitter blades as well as the full blades the method allows a designer to optimise the splitter geometry with ease. Inverse design allows ability to choose loading distribution independently can provide considerable flexibility in the choice of design parameters.

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