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li xin shi ya qi ji hou wan ye lun shi yan yan jiu ( yi )
Diao Zhenggang Chen Jingyi Cao Xiaojin Yu Yuanyan Wang Entao Pang Mingzhu Tests of an impeller with 25° backswept were conducted to establish stage and impeller characteristics. Tip speed of 380 m/sec was attained. Comparing with a radial discharge impeller which has the same diameter and inducer blade profile;stage efficiency was increased by 4 percent;and operating range was improved significantly. The effect of reaction on stage performance is analysed. Test data of slip facter and energy transfer coefficient are given.
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