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Effects of Averaging the Heat Transfer Coefficient on Predicted Material Temperature and Its Gradient
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The heat transfer coefficient (HTC) is often averaged spatially when designing heat exchangers. Since the HTC could vary appreciably about a heat transfer enhancement feature such as a pin fin or a rib, it is of interest ...
Revisiting Dimensionless Parameters Quantifying Film Cooling
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The adiabatic effectiveness of film cooling (η) has been characterized by the density (DRh) and blowing (BRh) ratios. In this study, dimensional analysis and computations based on Reynolds-averaged Navier–Stokes (RANS) ...
Effects of Downstream Vortex Generators on Film Cooling a Flat Plate Fed by Crossflow
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Counter-rotating vortices, formed by the interaction of film-cooling jets and the hot gas flow, adversely affect the performance of conventional film-cooling designs. Downstream vortex generators have been shown to improve ...
Computational and Experimental Study of Film-Cooling Effectiveness With and Without Downstream Vortex Generators
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Downstream vortex generators that involve a pair of rectangular plates arranged in an open V-shape placed just downstream of each film-cooling hole were shown to create flow and vortical structures that entrain lifted ...