Results 301 to 310 of about 167,722 (364)
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On the Film Cooling Effectiveness Controversy
Volume 1A: Gas Turbines, 1979A relationship between isothermal and adiabatic film cooling effectiveness has been derived. Data from the open literature have been used to validate this relationship. This effectively uncouples short duration techniques from the concept of isothermal effectiveness.
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Journal of heat transfer, 2019
This study investigates the effects of blowing ratio, density ratio, and spanwise pitch on the flat plate film cooling from two rows of compound angled cylindrical holes.
Nian Wang +3 more
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This study investigates the effects of blowing ratio, density ratio, and spanwise pitch on the flat plate film cooling from two rows of compound angled cylindrical holes.
Nian Wang +3 more
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Numerical study on film cooling effectiveness from spiral-channel hole
International Communications in Heat and Mass Transfer, 2023Yuhao Jia +4 more
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The effect of unsteadiness on film cooling effectiveness
33rd Aerospace Sciences Meeting and Exhibit, 1995Abstract : A unique feature of turbine rotor blade film cooling is the main flow unsteadiness caused by the upstream stator vanes. The combined effect of the vane inviscid flow field and the trailing edge wake results in a rapidly changing external pressure at the film cooled blade surface.
Jeffrey Bons +4 more
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Convex Curvature Effects on Film Cooling Adiabatic Effectiveness
Volume 3B: Heat Transfer, 2013Surface 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 curvature effects have been presumed to scale with 2r/d at the film cooling hole location, where r is the radius of curvature and d ...
James R. Winka +4 more
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Effect of Vortex Generators on Film Cooling Effectiveness
Journal of Turbomachinery, 2015Film cooling is often adopted, where coolant jets are ejected to form a protective layer on the surface against the hot combustor gases. The bending of jets in crossflow results in counter rotating vortex pair (CRVP), which is a cause for high jet lift-off and poor film cooling effectiveness in the near field.
S. Sarkar, Ganesh Ranakoti
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Journal of turbomachinery, 2018
Leakage flow between the rotating turbine blade tip and the fixed casing causes high heat loads and thermal stress on the tip and near the tip region. For this study, new squealer tips called partial cavity tips, which combine the advantages of plane and
J. Jeong, Woobin Kim, J. Kwak, J. Park
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Leakage flow between the rotating turbine blade tip and the fixed casing causes high heat loads and thermal stress on the tip and near the tip region. For this study, new squealer tips called partial cavity tips, which combine the advantages of plane and
J. Jeong, Woobin Kim, J. Kwak, J. Park
semanticscholar +1 more source
Effect of Stagnation Regions on Film Cooling Effectiveness
Volume 4: Turbo Expo 2007, Parts A and B, 2007Over the last decades, researchers have investigated many aspects of film cooling. The present study investigates the impact of stagnation region created by a downstream airfoil on endwall film cooling effectiveness. Experimental measurements are presented for a single row of cylindrical holes inclined at 35° with hole length to diameter ratio, L/D = 7.
RodrÃguez, S. +4 more
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