Boundary Layer Studies on Highly Loaded Cascades using Heated Thin Films and a Traversing Probe
Boundary Layer Studies on Highly Loaded Cascades using Heated Thin Films and a Traversing Probe
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使用加热薄膜和移动探头进行高负载级联的边界层研究
DOI：
10.1115/1.3230703
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发表时间：
1980
期刊：
影响因子：
--
通讯作者：
C. Graham
中科院分区：
文献类型：
--
作者：
M. Oldfield;R. Kiock;A. Holmes;C. Graham
在不断寻求提高涡轮机效率的过程中，叶片轮廓形状所起的作用仍然至关重要。三个涡轮机叶片在DFVLR布伦瑞克的高速叶栅风洞中进行了气动载荷连续增加的试验。除了尾流横向运动外，还测量了附面层特性.其中包括：a）使用恒温风速计测量叶片上沉积的薄膜铂温度计阵列上的波动传热率，以及B）紧贴叶片表面的扁平横向皮托管。描述了通过这些技术进行的过渡测量。© 1980 ASME
In the continuing quest for increased turbine efficiency, the part played by blade profile shape remains crucial. Three turbine vanes with successively increased aerodynamic loading were tested in the High Speed Cascade Wind Tunnel at DFVLR Braunschweig. In addition to wake traverses, measurements of the boundary layer behavior were made. These consisted of: a) use of a constant temperature anemometer to measure the fluctuating heat transfer rate on an array of thin film platinum thermometers deposited on the vanes and b) a flattened, traversing pitot probe held against the vane surface. Transition measurement by these techniques is described.© 1980 ASME