摘要
以某涡轮第二级导叶为研究对象,结合参数化特征建模技术研究设计冷却结构,并进行气热耦合分析,研究结果表明:低压导叶外部各截面上的温度分布均匀,尤其是在冲击冷却的部位,温度明显低于尾缘区域,而且冲击冷却在压力面上的冷却效果要好于吸力面,冷却效果理想。低压导叶内部温度梯度较大,整个叶片内壁面由冲击射流和横向流动作用使得冷却充分均匀。
The paper researches on cooling construction for the second bined with parametric feature modeling technology, making conjugated search results show that temperature uniformity on the of impingement is significantly lower than the trailing external blade, edge area, and guiding blade of a turbine, corn-heat transfer calculation. The re-especially temperature on the area cooling effect on the impingement area is better than the suction surface. Temperature gradient is bigger in the low pressure guiding blade the inner wall is cooled uniformly by impingement and transverse flow effect.
出处
《节能技术》
CAS
2013年第3期200-204,共5页
Energy Conservation Technology
关键词
涡轮
导叶
冷却
设计
研究
turbine
guiding blade
cool
design
research
