Results 281 to 290 of about 368,323 (315)
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Heat Transfer
Effusion cooling and thermal barrier coating have a crucial ability to cool down modern combustor liners and keep metal temperature below material maximum service temperature.
Ibrahim Edhem Tin +2 more
semanticscholar +1 more source
Effusion cooling and thermal barrier coating have a crucial ability to cool down modern combustor liners and keep metal temperature below material maximum service temperature.
Ibrahim Edhem Tin +2 more
semanticscholar +1 more source
Volume 4: Heat Transfer, Parts A and B, 2012
The overall cooling effectiveness for a turbine airfoil was quantified based on the external surface temperature relative to the mainstream temperature and the inlet coolant temperature. This can be determined experimentally when the model is constructed so that the Biot number is similar to that of engine components. In this study, the overall cooling
Randall P. Williams +3 more
openaire +1 more source
The overall cooling effectiveness for a turbine airfoil was quantified based on the external surface temperature relative to the mainstream temperature and the inlet coolant temperature. This can be determined experimentally when the model is constructed so that the Biot number is similar to that of engine components. In this study, the overall cooling
Randall P. Williams +3 more
openaire +1 more source
Heat Transfer, 2020
Emphasis on lean premixed combustion in modern low NOx combustion chambers limits the availability of air for cooling the combustion liner. Hence the development of optimized liner cooling designs is imperative for effective usage of available coolant.
Shoaib Ahmed +5 more
semanticscholar +1 more source
Emphasis on lean premixed combustion in modern low NOx combustion chambers limits the availability of air for cooling the combustion liner. Hence the development of optimized liner cooling designs is imperative for effective usage of available coolant.
Shoaib Ahmed +5 more
semanticscholar +1 more source
Overall Effectiveness of a Blade Endwall With Jet Impingement and Film Cooling
Journal of Engineering for Gas Turbines and Power, 2013Ever-increasing thermal loads on gas turbine components require improved cooling schemes to extend component life. Engine designers often rely on multiple thermal protection techniques, including internal cooling and external film cooling. A conjugate heat transfer model for the endwall of a seven-blade cascade was developed to examine the impact of ...
Amy Mensch, Karen A. Thole
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Adiabatic and Overall Effectiveness for the Showerhead Film Cooling of a Turbine Vane
Journal of Turbomachinery, 2012There have been a number of previous studies of the adiabatic film effectiveness for the showerhead region of a turbine vane, but no previous studies of the overall cooling effectiveness. The overall cooling effectiveness is a measure of the external surface temperature relative to the mainstream temperature and the inlet coolant temperature, and ...
Marc L. Nathan +3 more
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Volume 4: Heat Transfer; Electric Power, 1986
Future gas turbine combustion chambers and turbine blades require better cooling techniques to cope with the continual rise in operating temperatures with each new engine model. One technique that has been extensively investigated is that of transpiration cooling, for both combustion chambers (1–5) and turbine blades (6–9).
G. E. Andrews +3 more
openaire +1 more source
Future gas turbine combustion chambers and turbine blades require better cooling techniques to cope with the continual rise in operating temperatures with each new engine model. One technique that has been extensively investigated is that of transpiration cooling, for both combustion chambers (1–5) and turbine blades (6–9).
G. E. Andrews +3 more
openaire +1 more source
Journal of Turbomachinery, 2008
An experimental analysis for the evaluation of adiabatic and overall effectiveness of an effusion cooling geometry is presented in this paper. Chosen configuration is a flat plate with 98 holes, with a feasible arrangement for a turbine endwall. Fifteen staggered rows with equal spanwise and streamwise pitches (Sx/D=Sy/D=8.0), a length to diameter ...
A. Ceccherini +3 more
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An experimental analysis for the evaluation of adiabatic and overall effectiveness of an effusion cooling geometry is presented in this paper. Chosen configuration is a flat plate with 98 holes, with a feasible arrangement for a turbine endwall. Fifteen staggered rows with equal spanwise and streamwise pitches (Sx/D=Sy/D=8.0), a length to diameter ...
A. Ceccherini +3 more
openaire +2 more sources
Volume 5B: Heat Transfer, 2014
The laminated cooling or the layered cooling configuration with integrated impingement, rib-roughed and film cooling can result in a high overall cooling effectiveness and is believed to be a promising cooling technology for the next generation of advanced gas turbines. Previous studies found that the relative locations among the film hole, impingement
Xiao-Dong Zhang +2 more
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The laminated cooling or the layered cooling configuration with integrated impingement, rib-roughed and film cooling can result in a high overall cooling effectiveness and is believed to be a promising cooling technology for the next generation of advanced gas turbines. Previous studies found that the relative locations among the film hole, impingement
Xiao-Dong Zhang +2 more
openaire +1 more source
Infrared Assessment of Overall Effectiveness of a Modern Turbine Vane Cooling Scheme
46th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2010An experimental approach is used to evaluate a baseline vane airfoil cooling configuration for advanced gas turbine engine application by incorporating arrays of two types of cooling holes at prescribed angles, spacing and sizes into large-scale flat plate specimens.
Jamie Johnson +7 more
openaire +1 more source
Experimental investigations on overall cooling effect of ribbed channel with air bleeds
International Journal of Heat and Mass Transfer, 2012Abstract An experimental investigation on overall heat transfer performance of a rectangular channel, in which one wall has periodically placed oblique ribs to enhance heat exchange and cylindrical film holes to bleed cooling air, has been carried out in a hot wind tunnel at different mainstream temperatures, hot mainstream Reynolds numbers, coolant ...
Jianhua Wang +4 more
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