The Development of the Profile Boundary Layer in a Turbine Environment
The Development of the Profile Boundary Layer in a Turbine Environment
复制标题
涡轮环境中轮廓边界层的发展
DOI：
--
复制
发表时间：
1986
期刊：
影响因子：
--
通讯作者：
P. Bergmann
中科院分区：
文献类型：
--
作者：
J. Hourmouziadis;F. Buckl;P. Bergmann
叶栅试验试图模拟涡轮机中遇到的实际流动条件。然而，既不可能再现涡轮机的自由流湍流结构，也不可能再现上游叶片排的周期性尾流效应。通常的理解是，后者特别导致发动机中边界层的显著不同的行为。本文介绍了叶栅和涡轮机试验台的试验结果。将网格生成的自由流湍流结构与涡轮机中的自由流湍流结构进行了比较。剖面压力分布的测量，齐平安装的热膜和流动可视化用于解释测试结果。显示了对叶栅中、导叶上和具有典型倾斜边界层的转子叶片上的边界层发展的一些观察，表明在所有情况下基本上具有相似的行为。版权所有© 1986 by ASME
Cascade testing tries to simulate the actual flow conditions encountered in a turbine. However, it is neither possible to reproduce the free stream turbulence structure of the turbomachinery, nor the periodic wake effects of upstream blade rows. The usual understanding is that the latter in particular results in a significantly different behaviour of the boundary layer in the engine.Experimental results from cascades and turbine rigs are presented. Grid generated free stream turbulence structure is compared to that in the turbine. Measurements of the profile pressure distribution, flush mounted hot films and flow visualization were used for the interpretation of the test results. Some observations of the boundary layer development in the cascade, on the guide vanes and on rotor blades with typically skewed boundary layers are shown indicating essentially similar behaviour in all cases.Copyright © 1986 by ASME