Results 261 to 270 of about 167,722 (364)

Radiative Cooling Materials for Extreme Environmental Applications. [PDF]

open access: yesNanomicro Lett
Xu J   +9 more
europepmc   +1 more source

Film Cooling Effectiveness and Flow Structures of Butterfly-Shaped Film Cooling Hole Configuration

Volume 7A: Heat Transfer — Combustors; Film Cooling, 2023
Abstract Film cooling is applied to various high-temperature components of a gas turbine and greatly affected by the shape of the injection hole. Numerous studies have been conducted to investigate various film cooling structures to increase the film cooling effectiveness by inducing coolants toward the surface.
Jin Young Jeong   +4 more
openaire   +2 more sources

Study on Effects of Spanwise-Expansion Parameters on Film Cooling Effectiveness of Diffusion Shaped Hole Configurations

Journal of turbomachinery, 2022
Diffusion shaped holes are widely used on aero-engine turbine blades for film cooling. The effect of the spanwise-expansion angle and spanwise width of the hole exit on the film cooling effectiveness of diffusion shaped holes were investigated in this ...
Cun-liang Liu   +6 more
semanticscholar   +1 more source

Effect of Coolant Crossflow on Film Cooling Effectiveness of Diffusion Slot Hole with and without Ribs

Journal of turbomachinery, 2022
The coolant flow condition at the film hole entrance has a notable effect on film cooling effectiveness. The previous studies about internal ribbed crossflow effects are the hole with a circular inlet cross-section. In this study, a diffusion slot hole
Chen Li, B. An, J. Liu
semanticscholar   +1 more source

Directional Effects of Effusion Cooling on the Cooling Film Effectiveness

AIAA Journal, 2021
Effusion cooling in gas turbine combustors is complicated by swirling flows for anchoring flame, whereas miniature effusion cooling jets are highly directional.
Leo C. Paitich   +5 more
openaire   +1 more source

Investigations of improved cooling effectiveness for ramp film cooling with compound angle film cooling jets

Aircraft Engineering and Aerospace Technology, 2021
Purpose This paper aims to investigate the film cooling effectiveness (FCE) and mixing flow characteristics of the flat surface ramp model integrated with a compound angled film cooling jet. Design/methodology/approach Three-dimensional numerical simulation is performed on a flat surface ramp model with Reynolds Averaged Navier-Stokes approach using
Krishna Anand Vasu Devan Nair Girija Kumari   +1 more
openaire   +1 more source

Scalar Diffusion Equation-Based Model to Predict 2-Dimensional Film Cooling Effectiveness of a Shaped Hole

, 2021
One-dimensional laterally averaged adiabatic film cooling effectiveness η¯lat-based correlations have been widely employed in the cooling design of the modern gas turbine and aero-engine; however, the flow field of the discrete film cooling is fully ...
Ziyu Chen   +3 more
semanticscholar   +1 more source

Enhancement in Film Cooling Effectiveness Using Delta Winglet Pair

, 2021
A simulation study has been carried out to investigate the influence of delta winglet pair (DWP) for improving the film cooling effectiveness of a gas turbine blade.
Nirmal Halder, A. Saha, P. Panigrahi
semanticscholar   +1 more source

Effects of mainstream attack angles on film-cooling effectiveness of double-jet film-cooling

International Journal of Thermal Sciences, 2020
Abstract Effects of mainstream attack angles on double-jet film-cooling (DJFC) effectiveness under different blowing ratios (M = 0.5, 1.0, 1.5, 2.0) are investigated experimentally on a flat plate, and the flow field is obtained by simulation. The attack angles (i) are −30°, −20°, −10°, 0°, 10°, 20°, 30° respectively.
Jianhong He   +5 more
openaire   +1 more source

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