NUMERICAL ANALYSIS AND EXPERIMENTAL RESEARCH ON THE INTERNAL FLOW CHARACTERISTIC OF AXIAL FLOW FANS WITH DIMPLES ON SUCTION SURFACE OF BLADES
NUMERICAL ANALYSIS AND EXPERIMENTAL RESEARCH ON THE INTERNAL FLOW CHARACTERISTIC OF AXIAL FLOW FANS WITH DIMPLES ON SUCTION SURFACE OF BLADES
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DOI：
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发表时间：
2008
影响因子：
2.4
通讯作者：
Young-Bin Bin-Young-Bin-Bin-115601622;Cheng Zhi
中科院分区：
文献类型：
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作者：
Young-Bin Bin-Young-Bin-Bin-115601622;Cheng Zhi
对两台轴流风机的内部流动特性进行了数值分析和实验研究。研制的风机应用于空调室外机。两个风扇具有相同的外径和几乎相同的叶片轮廓。所研究的风扇之间的差异只是在叶片的吸力侧，一个风扇的叶片的吸力面上刻着酒窝。数值模拟采用N-S方程和κ-湍流模型相结合的方法。数值结果表明，在叶片吸力侧开凹槽并不能改善风机的气动特性和静压。凹坑位置的局部静压得到改善，凹坑中心的静压高于韧窝边界的静压。叶片吸力侧的凹坑增加了低体积流量条件下的噪声，对大体积流量条件下的气动噪声没有影响。
A numerical analysis and experimental research have been designed to study the internal flow characteristic of two axial flow fans. The researched fans were used in air conditioner out door unit. Both fans have the same outside diameter and nearly the same blade profile. The difference between the studied fans was only on the suction sides of blades; the dimples were carving on the suction sides of blades of one fan. Numerical simulation was based on Navier-Stokes equations coupled withκ-eturbulence model. Numerical results showed that, the aerodynamic characteristic and static pressure of the fan was not improved by carving dimples on the suction sides of blades. The local static pressure of the dimple position was improved, and the static pressure at the center of the dimples was higher than that of the boundary of dimples. The dimples on the suction sides of blades increased the noise of lower volume flow rate condition, and it had no influence to the aerodynamic noise of large volume flow rate condition.