大子午扩张涡轮的前掠宽弦叶型数值研究  

Numerical Investigation of Forward-swept and Wide-chord Blade Profile in Large Meridional Expansion Turbine

作　　者：唐洪飞[1] 张威[1] 王振峰[1] 韩万金[1] 

机构地区：[1]哈尔滨工业大学能源科学与工程学院,哈尔滨150001

出　　处：《汽轮机技术》2009年第6期428-430,共3页Turbine Technology

摘　　要：在涡扇发动机的设计中,高低压涡轮过渡段处多采用较大子午扩张的结构,此结构给低压涡轮设计带来了难度。对采用前掠宽弦重新设计的低压涡轮进行了3D数值模拟,并研究了此种叶型在低压涡轮特殊结构下对气动性能的影响。结果表明:针对大子午扩张结构的低压涡轮,采用此设计能够非常有效地控制前部流动,也能降低后部流道内损失。In turbofan engine＇ s design, the structure with a large meridional expansion was used between HP and LP turbine, and this structure has brought the difficulty for the low pressure turbine design. In this paper, the 3D numerical simulation was carried on the redesign LP turbine with forward-swept and wide-chord, and studied the effect of aerodynamic performance about the LP turbine with the special structure using such profile. The result indicated： in the LP turbine with large meridional expansion structure, it will control the front flow with such profile, also can reduce the loss of the channel flow.

关 键 词：子午扩张 低压涡轮 数值模拟 前掠宽弦叶型 高性能 

分 类 号：V231.3[航空宇航科学与技术—航空宇航推进理论与工程]