The stability of alternate blade cavitation in flat plate cascades was examined by a linear analysis with a singularity method based on closed cavity model allowing the cavity length to change. It was found that alternate blade cavitation was stable for the cascades with larger solidity and unstable for the cascades with smaller solidity. The equal length cavitation is stable in both cases in the region of cavitation number larger than that where the alternate blade cavitation solution separates from the equal length cavitation. This result suggests that the alternate blade cavitation could exist only for the cascades with larger solidity. It is shown that the alternate blade cavitation occurs in the cascade with larger solidity since the local flow near the cavity closure reduces the angle of attack to the opposing blade when the cavity closure point approaches the leading edge of the opposing blade.
|ホスト出版物のタイトル||Proceedings of the 1999 3rd ASME/JSME Joint Fluids Engineering Conference, FEDSM'99, San Francisco, California, USA, 18-23 July 1999 (CD-ROM)|
|出版社||American Society of Mechanical Engineers|
|出版ステータス||出版済み - 1999|
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