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RISExperimental and Numerical Heat Transfer Investigation of an Impinging Jet Array on a Target Plate Roughened by Cubic Micro Pin Fins1
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A generic impingement cooling system for turbomachinery application is modeled experimentally and numerically to investigate heat transfer and pressure loss characteristics. The experimental setup consists of an array of ...
High Resolution Heat Transfer Measurement on Flat and Contoured Endwalls in a Linear Cascade
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In order to continue increasing the efficiency of gas turbines, a significant effort is being made to reduce losses induced by secondary flows in turbine stages. In addition to their impact on aerodynamic losses, these ...
High Resolution Heat Transfer Measurements on the Stator Endwall of an Axial Turbine
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In order to continue increasing the efficiency of gas turbines, an important effort is made on the thermal management of the turbine stage. In particular, understanding and accurately estimating the thermal loads in a vane ...
Single and Multiple Row Endwall Film Cooling of a Highly Loaded First Turbine Vane With Variation of Loading
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper reports endwall filmcooling investigations with single and multiple rows of fanshaped film holes using temperaturesensitive paint (TSP). The experiments are carried out in a sixbladed linear cascade based on the ...
Convex Curvature Effects on Film Cooling Adiabatic Effectiveness
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Surface curvature is known to have significant effects on film cooling performance, with convex curvature inducing increased film effectiveness and concave curvature causing decreased film effectiveness. Generally, these ...
Evaluation of Superposition Predictions for Showerhead Film Cooling on a Vane
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The leading edge of a turbine vane is subject to some of the highest temperature loading within an engine, and an accurate understanding of leading edge film coolant behavior is essential for modern engine design. Although ...
Steady RANS of Flow and Heat Transfer in a Smooth and Pin-Finned U-Duct With a Trapezoidal Cross Section
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Steady Reynolds-averaged Navier--Stokes (RANS) simulations were performed to examine the ability of four turbulence models—realizable k–ε (k–ε), shear-stress transport (SST), Reynolds stress model with linear pressure ...
Experimental Evaluation of Large Spacing Compound Angle Full Coverage Film Cooling Arrays: Adiabatic Film Cooling Effectiveness
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Adiabatic film cooling effectiveness contours are obtained experimentally with the use of temperature sensitive paint (TSP) on low thermal conductivity film cooled surfaces. The effects of blowing ratio, surface angle, and ...
Effect of Endwall Contouring on a Transonic Turbine Blade Passage: Heat Transfer Performance
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Effect of turbine endwall contouring on its aerodynamic performance has been widely studied, but only a few studies are available in the open literature investigating its effect on heat transfer performance; especially at ...