小叶片弦长对跨声轴流风扇气动性能的影响  

Investigation of the influence of splitter chord length on the transonic axial fan rotor

作　　者：孙玺淼[1] 颜培刚[1] 王松涛[1] 王仲奇[1] 

机构地区：[1]哈尔滨工业大学推进理论及技术研究所,哈尔滨150001

出　　处：《航空动力学报》2007年第12期2050-2054,共5页Journal of Aerospace Power

基　　金：国家863基金(863-2-1-3-1)

摘　　要：针对某型跨声轴流风扇大小叶片转子,通过优化去除小叶片中弧线形状的影响,对比分析了最高效率点工况下小叶片弦长对转子气动性能的影响.发现小叶片前缘膨胀波可以调整大叶片壁面附面层逆压力梯度段的长度和逆压梯度的强度.正确选择小叶片前缘位置可以降低附面层损失,抑制大叶片后部分离,合理分配气动负荷.An axial transonic fan with splitter was designed. An optimization method was used to eliminate the influence of the splitter camber shape. The effect of splitter chord length on the aerodynamic performance of the fan rotor was analyzed under the maximum efficiency condition. The results show that the leading edge expanding wave can adjust the length of the main blade boundary layer negative gradient and its strength. Correctly selecting the splitter leading edge position can reduce the boundary loss, control the separation at the rear part of the main blade and produce optimal aerodynamic load distribution.

关 键 词：航空 航天推进系统 轴流跨声风扇 大小叶片 弦长 激波 

分 类 号：V235.13[航空宇航科学与技术—航空宇航推进理论与工程]