应用叶尖小翼改善对旋风机性能的数值及实验研究

Numerical and Experimental Study on the Improvement of Counter-Rotating Fan Performance With the Tip Winglet

针对某空调对旋风机设计了叶尖小翼,借助数值模拟与实验的方法,详细分析了不同小翼构型对空调对旋风机叶尖流场以及声学性能的影响。仿真计算结果表明,应用吸力面小翼能够增强叶尖近吸力侧流动的稳定性,而压力面小翼对叶尖流动的影响很小。噪声测试结果显示,应用吸力面小翼可降低对旋风机的总声压级。

Tip winglet is designed for an air-conditioner counter-rotating fan.By means of numerical and experimental method,influence of tip winglet on the tip flow-fields and acoustics performance of the counter-rotating fan is analyzed detailedly.The simulations show that application of suction side tip winglet can enhance the tip suction side flow stability effectively,while the pressure side winglet shows little influence.The noise tests show that application of suction side tip winglet can reduce the overall sound pressure level of the counter-rotating fan.