Results And Discussion

The surface labeling scheme, seen in Figure 1.3, will be used throughout this paper. The inner and outer surface side walls are named according to their location in the turbine blade. That is, the inner surface is closer to the mid-chord position of the blade (a relatively internal position), and the outer surface is closer to the trailing edge of the blade, and thus is closer to an external surface of the blade. The leading and trailing surfaces of the blade follow the conventional definitions of these surfaces, however each surface is subdivided into two surfaces in order to investigate the span-wise distribution of heat transfer along the major surfaces (leading and trailing). Therefore we have a total of six surfaces: leading-outer, leading-inner, trailing-outer, trailing-inner, outer, and inner. A brief discussion on the secondary flow pattern induced by a dimple is presented below.

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