Results 21 to 30 of about 13,478 (277)
Case Studies in Thermal Engineering, 2022 Micro cooling utilizing the micro-sized cooling hole or a porous structure on the surface is a promising technology in cooling applications of gas turbine blades.
Mingeon Kim +3 more
doaj +1 more source
Flow characterization of microscale effusion and transpiration air cooling on single blade
Case Studies in Thermal Engineering, 2022 Micro cooling has drawn attention as the next-generation cooling technique that is better than film cooling for a high-temperature turbine blade. Not to reduce the gas turbine efficiency while having high blade cooling effectiveness, it recommends that ...
Mingeon Kim +3 more
doaj +1 more source
Experimental Study of Impingement Effusion-Cooled Double-Wall Combustor Liners: Thermal Analysis
Energies, 2021 A new experimental study is presented for a combustor with a double-wall cooling design. The inner wall at the hot gas side features effusion cooling with 7-7-7 laidback fan-shaped holes, and the outer wall at the cold side features an impingement hole ...
Thomas Jackowski +2 more
doaj +1 more source
Effects of Manufacturing Tolerances on Double-Wall Effusion Cooling
Journal of Turbomachinery, 2023 Abstract As aeroengine designers seek to raise turbine entry temperatures for greater thermal efficiencies, novel cooling schemes are required to ensure that components can survive in increasingly hotter environments. By utilizing a combination of impingement cooling, pin-fin cooling, and effusion cooling, double-wall effusion cooling is
van de Noort, M +2 more
openaire +2 more sources
International Journal of Turbomachinery, Propulsion and Power, 2021 To meet the challenges of increased thermal loads and performance demands on aero-engine turbine blades, more advanced cooling techniques are required. This study used a modification of the well-known Goldstein equation to predict film effectiveness for ...
Matthew Courtis +4 more
doaj +1 more source
Deposition Characteristics of Particles with Different Diameters in an Impingement-Effusion Structure with a Double-Wall Blade [PDF]
Journal of Applied Fluid Mechanics, 2023 Ingestion and deposition of fine particles on the surface of the coolant passage degrade the blade’s cooling performance. This paper proposes a deposition model to investigate the complex deposition characteristics of fine particles during repeated ...
W. Zhang, P. Zhang, Y. D. Wang
doaj +1 more source
Energies, 2023 The accurate prediction of heat fluxes and, thus, metal wall temperatures of gas turbine (GT) combustor liners is a complicated and numerically expensive task.
Alberto Amerini +2 more
doaj +1 more source
Theory of cooling by flow through narrow pores [PDF]
, 2006 We consider the possibility of adding a stage to a dilution refrigerator to provide additional cooling by ``filtering out'' hot atoms. Three methods are considered: 1) Effusion, where holes having diameters larger than a mean-free path allow atoms to ...
J. M. Ziman +3 more
core +3 more sources
Terrestrial analogs and thermal models for Martian flood lavas [PDF]
, 2000 The recent flood lavas on Mars appear to have a characteristic “platy-ridged” surface morphology different from that inferred for most terrestrial continental flood basalt flows.
A. S. McEwen +77 more
core +1 more source
Energies, 2020 The presence of injectors with strongly swirled flows, used to promote flame stability in the combustion chambers of gas turbines, influences the behaviour of the effusion cooling jets and consequently of the liner’s cooling capabilities. For this reason,
Tommaso Lenzi +4 more
doaj +1 more source