摘要
进口附面层厚度对大转角弯叶片损失的影响韩万今，吕红卫，芦文才，王仲奇（哈尔滨工业大学哈尔滨１５０００１）关键词：进口附面层，大转角，弯叶片叶片损失来源于两方面：一是进口附面层带来的“原”损失，二是绕流叶栅产生的新损失。二次流引起“原”损失重新分布，并...
Under the condition of the different thicknesses of inlet boundary Layers, the outlet fields for the turbine cascades with high-turning straight, positive curved and negative curved blades were measured with five-hole bunch shaped probes in detail. The experimental results show that the thicknesses of inlet boundary layers only effect on the intensity and dimension of passage vortices and do not effect on their locations. In the case of any inlet boundary layer thickness in the cascade with straight blades upper and lower passage vortices meet at the cascade middle, and the high loss region of large area appeares there. The blade negative curving controlls passage vortices near the endwalls and reduces the total loss notably. The thicker the inlet boundary layers, the greater the proportion reducing the loss in the comparison with straight blades.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
1994年第4期391-394,共4页
Journal of Engineering Thermophysics
基金
国家自然科学基金
教委基金
关键词
进口附面层
大转角
弯叶片
叶片
inlet boundary layer, high-turning angle, curved blades.
