Results 101 to 110 of about 480,813 (179)
The Effect of Daylighting Strategies on Building Cooling Loads and Overall Energy
, 1986 Johnson, R. +3 more
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Overall Cooling Effectiveness With Internal Serpentine Channels and Optimized Film Cooling Holes
Journal of Turbomachinery, 2023Abstract The overall cooling effectiveness for gas turbine airfoils is a function of the combined cooling due to internal cooling configurations and film cooling configurations. Typically, film cooling configurations are evaluated independent of the cooling effects of the internal feed channels, generally based on adiabatic effectiveness
Christopher Yoon +3 more
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Numerical Investigation on Overall Cooling Effectiveness of Narrow-Channel Double-Wall Cooling
ASME Journal of Heat and Mass TransferAbstract In the double-wall cooling of turbine blades, coolant migration can lead to uneven flow distribution, which, in severe cases, can cause hot gas intrusion into the film holes, affecting the lifespan of the blade. To mitigate the negative influence of coolant migration, this study proposes a novel double-wall system called the ...
Guangyao Xu +4 more
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Volume 7A: Heat Transfer, 2020
Abstract 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.
Yin-Hsiang Ho +5 more
semanticscholar +4 more sources
Abstract 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.
Yin-Hsiang Ho +5 more
semanticscholar +4 more sources
Journal of Turbomachinery
Abstract To keep metal temperature at allowable levels in modern gas turbine engines, both internal and external (film) cooling is necessary, which is represented by an overall cooling effectiveness. Previous studies measured overall cooling effectiveness for first stage vanes in low-speed experiments, where it is appropriate to use ...
Matthew Krull, Stephen Lynch
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Abstract To keep metal temperature at allowable levels in modern gas turbine engines, both internal and external (film) cooling is necessary, which is represented by an overall cooling effectiveness. Previous studies measured overall cooling effectiveness for first stage vanes in low-speed experiments, where it is appropriate to use ...
Matthew Krull, Stephen Lynch
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Journal of Turbomachinery
Abstract Thermal design for the trailing edge of a turbine vane is critically challenging because the thinnest trailing-edge region has a low-thermal capacity, resulting in a much quicker thermal response to the hot gas. Cooling air for this region is usually extracted from the internal cooling passages inside the vane main body and thus
Xing Yang, Zihan Hao, Zhenping Feng
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Abstract Thermal design for the trailing edge of a turbine vane is critically challenging because the thinnest trailing-edge region has a low-thermal capacity, resulting in a much quicker thermal response to the hot gas. Cooling air for this region is usually extracted from the internal cooling passages inside the vane main body and thus
Xing Yang, Zihan Hao, Zhenping Feng
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Journal of Thermal Science and Engineering Applications, 2021
Abstract Increasing interest in the use of ceramic matrix composites (CMCs) for gas turbine engine hot gas path components requires a thorough examination of the thermal behavior one may expect of such components. Their highly anisotropic thermal conductivity is a substantial departure from traditional metallic components and can ...
Carol E. Bryant, James L. Rutledge
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Abstract Increasing interest in the use of ceramic matrix composites (CMCs) for gas turbine engine hot gas path components requires a thorough examination of the thermal behavior one may expect of such components. Their highly anisotropic thermal conductivity is a substantial departure from traditional metallic components and can ...
Carol E. Bryant, James L. Rutledge
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International Journal of Heat and Mass Transfer, 2020
Abstract The effects of geometrical parameters on overall cooling effectiveness were experimentally investigated on the flat plate with impingement/effusion cooling. Geometrical parameters investigated included two relative positions of impingement and effusion holes (staggered arrangement and overlapped arrangement) and three impingement gap ...
Gang Xie +5 more
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Abstract The effects of geometrical parameters on overall cooling effectiveness were experimentally investigated on the flat plate with impingement/effusion cooling. Geometrical parameters investigated included two relative positions of impingement and effusion holes (staggered arrangement and overlapped arrangement) and three impingement gap ...
Gang Xie +5 more
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Overall Cooling Effectiveness on a Gas Turbine Vane With Swirl-Film Cooling
Volume 5A: Heat Transfer, 2019Abstract Numerical calculation of conjugate heat transfer is carried out to study the effect of combined film and swirl cooling at the leading edge of a gas turbine vane with a a cooling chamber inside, in which 3-D steady RANS approach with the k-ω SST turbulence model is used.
Haifen Du +4 more
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Volume 5A: Heat Transfer, 2019
Abstract Application of effusion cooling or effusion based compound cooling in the state of art gas turbine combustor is more and more common, especially in aero-engines. A linearly arranged planar optically accessible three-nozzle lab scale combustor equipped with perforated testing plate for cooling is designed.
Yongbin Ji +8 more
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Abstract Application of effusion cooling or effusion based compound cooling in the state of art gas turbine combustor is more and more common, especially in aero-engines. A linearly arranged planar optically accessible three-nozzle lab scale combustor equipped with perforated testing plate for cooling is designed.
Yongbin Ji +8 more
openaire +2 more sources