Results 1 to 10 of about 12,641 (264)
Enhancement of Film Cooling Effectiveness in a Supersonic Nozzle. [PDF]
Entropy (Basel), 2023 Film cooling as applied to rocket nozzles is analyzed numerically with emphasis on the assessment of the effect of the mixing of coolant with the hot stream. Cooling performance, as characterized by cooling effectiveness, is studied for three different coolants in the three-dimensional, turbulent flow field of a supersonic convergent-divergent nozzle ...
Somasekharan N +5 more
europepmc +4 more sources
Effect of an Upstream Unconnected Bulge on Film Cooling
Chemical Engineering Transactions, 2017 Film cooling technology is commonly used in a cooling system of gas turbines. For different upstream bulge configurations, the unconnected and connected configurations were used to investigate the film cooling effectiveness and downstream dimensionless ...
Q. Li +5 more
doaj +2 more sources
Mechanical Engineering Journal, 2020 The reliability of turbine blades and vanes of modern high temperature gas turbines is assured by turbine blade cooling technologies. Among the various cooling methods, film cooling has been a key technology to ensure the long-term operation of turbine ...
Kenichiro TAKEISHI +3 more
doaj +3 more sources
Surrogate-based optimization of a cratered cylindrical hole to enhance film-cooling effectiveness
Journal of Thermal Science and Technology, 2016 A cratered film-cooling hole was investigated to determine the effect of shape parameters on film-cooling performance, and shape of the hole was optimized to improve film-cooling effectiveness.
Jun-Hee KIM, Kwang-Yong KIM
doaj +3 more sources
Engineering Applications of Computational Fluid Mechanics, 2023 Advanced cooling techniques are essential in modern gas turbines to improve the efficiency of the Brayton cycle by raising the turbine inlet temperature.
Yoonhyeong Jeong +6 more
doaj +1 more source
Analysis of sweeping jet and film composite cooling using the decoupled model
Open 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
Frontiers in Energy Research, 2022 Experimental investigations have been conducted to improve the cooling effectiveness of film-cooling technology. A multiple row of cylindrical holes at the flat surface was considered by inclining the holes at 35° along the streamwise direction.
Jaemun Choi +5 more
doaj +1 more source
A Comparative Study of Film Cooling with Combined Impingement and Film Cooling [PDF]
Journal of Applied Fluid Mechanics, 2023 In order to cool the gas turbine vane or blade and raise the operating temperature, two standard convective cooling methods are used: jet impingement cooling and film cooling.
R. K. Panda, A. K. Pujari, B. Gudla
doaj +1 more source
Effect of Inlet Compound Angle of Backward Injection Film Cooling Hole
Energies, 2020 Backward injection film cooling holes were studied to improve film cooling effectiveness using simple cylindrical holes, and this principle was applied to an actual gas turbine.
Yoon Seong Jeong, Jun Su Park
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Numerical Investigation of the Effects of Lattice Array Structures on Film Cooling Performance
Energies, 2022 To better understand the mechanism influencing the periodic lattice structures in gas turbine blade cooling, these numerical simulations present a systematic comparison of the effects in cases involving pin-fin, Kagome, and BCC lattice arrays on film ...
Qiang Fu +3 more
doaj +1 more source