Passive Control of Unstable Characteristics of a High Specific Speed Diagonal-Flow Fan by an Annular Wing
Passive Control of Unstable Characteristics of a High Specific Speed Diagonal-Flow Fan by an Annular Wing
复制标题
环形翼对高比转速斜流风机不稳定特性的被动控制
DOI：
10.1115/90-gt-159
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发表时间：
1990
期刊：
影响因子：
--
通讯作者：
M. Inoue
中科院分区：
文献类型：
--
作者：
K. Kaneko;T. Setoguchi;M. Inoue
提出了一种高比转速斜流风机不稳定特性的被动控制方法。它可以消除压力-流量曲线在低流量区的不稳定特性，而不会降低设计点的性能。控制动作自然地（被动地）完成，没有任何能量输入。用Gottingen 625翼型的环形机翼代替了普通斜流风扇的进气喷嘴。在性能试验和内流测量的基础上，讨论了被动控制的机理和最佳几何参数。
A passive control of an unstable characteristics of a high specific speed diagonal-flow fan has been proposed. It is possible to eliminate the unstable characteristics of pressure-flow rate curve in a low flow region without deterioration of performance at design point. The control action is done naturally (passively) without any energy input. The inlet nozzle of an ordinary diagonal-flow fan was replaced by an annular wing with Gottingen 625 airfoil section. The mechanism of the passive control and the optimum geometrical parameter are discussed on the basis of the performance tests and internal flow measurements.Copyright © 1990 by ASME