The influence of blade number, blade thickness, location of splitter blades and tip clearance on mass flow, pressure ratio and efficiency is showed.

讨论了改变叶片数目，增加叶片厚度，调整分流叶片周向位置以及增加间隙高度等对离心叶轮流量、压比和效率等总体性能的影响。

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And the results showed that the performance of the diffuser with splitter blade was improved. The pressure recovery coefficient was (increased) and the aerodynamic loss coefficient was decreased.

同时比较了大小叶片设计方案与全为大叶片方案的性能，发现采用大小叶片可提高静压恢复系数，降低空气动力损失。

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And the results showed that the performance of the diffuser with splitter blade was improved. The pressure recovery coefficient was (increased) and the aerodynamic loss coefficient was decreased.

同时比较了大小叶片设计方案与全为大叶片方案的性能，发现采用大小叶片可提高静压恢复系数，降低空气动力损失。

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