International Journal of Rotating Machinery / 2013 / Article / Fig 32

Review Article

Heat Transfer Augmentation Technologies for Internal Cooling of Turbine Components of Gas Turbine Engines

Figure 32

Comparisons of relative performance of rib turbulators, pin fins, swirl chambers, dimple-smooth arrangements, dimple-protrusion arrangements, dimple-dimple arrangements, surface roughness, and smooth-walled channels [1], with results from rotation experiments [128, 173]. Globally averaged thermal performance parameters are presented as dependent upon friction factor ratios .