Results 11 to 20 of about 40,768 (260)

A numerical investigation of the effect of micro vortex generators on film cooling [PDF]

open access: yesScientific Reports
Film cooling is a key technology for protecting turbine blades from high thermal loads, directly influencing component durability, efficiency, and operational safety.
Mana Suwari, Ehsan Roohi
doaj   +2 more sources

Overall thermal performances of backward film cooling with simulated surface thermal barrier coatings at various walls

open access: yesCase Studies in Thermal Engineering, 2022
Backward film cooling can protect more efficiently some regions of turbine hot components, in comparison with the forward jet. The rapid increase of operational temperature requires the developments of the coupling of active cooling and thermal barrier ...
Jian Pu   +4 more
doaj   +1 more source

Effects of Mainstream Velocity and Turbulence Intensity on the Sweeping Jet and Film Composite Cooling

open access: yesMachines, 2023
The jet always sweeps to the leftmost and rightmost points in the sweeping jet and film composite cooling (SJF) process, resulting in a different coolant flow in each film hole. The film can not easily cover the outer surface evenly under the scouring of
Xiangcan Kong   +5 more
doaj   +1 more source

Numerical analysis and design optimization on full coverage film-cooling for turbine guided vane

open access: yesEngineering Applications of Computational Fluid Mechanics, 2022
Based on numerical simulations, the heat transfer and flow field of a turbine vane are analyzed and the film cooling is improved. The optimization objective is increasing the overall cooling effectiveness with cascade pressure loss factors staying almost
Mingrui Wang   +5 more
doaj   +1 more source

Analysis of sweeping jet and film composite cooling using the decoupled model

open access: yesOpen Physics, 2023
The heat transfer process of the sweeping jet and film composite cooling (SJF) structure of the turbine blade leading edge is complex. The current work divides the overall cooling effectiveness of the SJF into the impingement heat transfer effectiveness,
Kong Xiangcan   +6 more
doaj   +1 more source

Experimental and numerical investigation of micro-scale effusion and transpiration air cooling on cascaded turbine blades

open access: yesCase 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

ANALISIS EFEKTIVITAS MESIN COOLING TOWER MENGGUNAKAN RANGE AND APPROACH

open access: yesOPSI, 2018
Cooling tower diperlukan di industri pembangkit listrik tenaga panas bumi untuk sirkulasi air pendingin dengan cara mengontakkan dengan gas tak jenuh sehingga sebagian dari zat cair itu akan menguap dan suhu zat cair turun PT Star Energy Geothermal ...
Ahmad Muhsin, Zicko Pratama
doaj   +1 more source

Conjugate Heat Transfer Investigation on Swirl-Film Cooling at the Leading Edge of a Gas Turbine Vane

open access: yesEntropy, 2019
Numerical calculation of conjugate heat transfer was carried out to study the effect of combined film and swirl cooling at the leading edge of a gas turbine vane with a cooling chamber inside.
Haifen Du   +4 more
doaj   +1 more source

Effects of thermal barrier coating thickness and surface roughness on cooling performance sensitivity of a turbine blade

open access: yesCase Studies in Thermal Engineering, 2023
In this study, the conjugate heat transfer method is used to research the impact of the thermal barrier coating thickness (0–300 μm) and surface roughness (Ra = 0–30 μm) on the cooling characteristics of the high-pressure turbine blade.
Zequn Du   +3 more
doaj   +1 more source

Effect of the Hot Streak on the Overall Cooling Performance of a Coated Rotor Blade

open access: yesEnergies, 2022
The influence of the HS (hot streak) and unsteady wake on the overall cooling performance of a rotor blade was studied in this paper. The results show that: (1) Both the magnitude and temperature of the HS gradually drops down as it passes downstream of ...
Li Shi, Yuanfeng Lu, Hanze Huang
doaj   +1 more source

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