An Experimental Investigation of the Effect of Dimples on Turbine Adiabatic Film Cooling
Isaac Roland
Broschiertes Buch

An Experimental Investigation of the Effect of Dimples on Turbine Adiabatic Film Cooling

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This experiment explored the ability of a row of cylindrical dimples' vortex shedding to entrain the cooling film in the boundary layer for longer distances, thus enhancing cooling on a turbine leading edge model. The experiment utilized a semi-cylindrical leading edge followed by an after body with straight surfaces. A foam leading edge drilled with cooling holes allowed for a determination of adiabatic film effectiveness using an Infrared Thermography (IR) technique to measure surface temperature distributions. Two test models were utilized, one with a row of seven dimples placed upstream fr...