International Journal of Rotating Machinery / 2013 / Article / Fig 19

Review Article

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

Figure 19

Comparison 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, including results from investigations after 2003. Globally averaged thermal performance parameters are presented as dependent upon friction factor ratios . Symbol definitions are given in Figure 18.