Results 251 to 260 of about 328,216 (310)
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Influence of different film cooling arrangements on endwall cooling
International Journal of Heat and Mass Transfer, 2016Abstract The complex large scale coherent vortex systems which originate and develop through the endwall passage have strong interaction with the film cooling flows near the endwall. Two full coverage film cooling arrangements on a typical flat vane endwall were investigated experimentally. The influence of coolant mass flow rate and density ratio on
Xueying Li, Jing Ren, Hongde Jiang
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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
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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
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Predictions of Adiabatic Film Cooling Effectiveness for Effusion Film Cooling
Volume 4: Turbo Expo 2007, Parts A and B, 2007This paper presents computational predictions of adiabatic film cooling effectiveness for effusion cooling systems with 90° and 30° holes. Predictions are performed for a range of coolant injection mass flow rates per unit surface area, G, of 0.1kg/sm2 - 1.6 kg/sm2 for 90° holes with constant pitch-to-diameter ratio of X/D = 11 and 10 rows of holes and
Nadiahnor Md. Yusop +5 more
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Research on the flow field and film cooling effectiveness of the endwall with swirling film cooling
Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 2022In order to obtain the effect of endwall secondary flow on the swirling film cooling, a geometric model of cascade is established to research the endwall swirling film cooling and swirling flow induced by prismatic jet impingement configurations. Numerical simulation is applied to investigate three jet flow configurations on the endwall film cooling ...
Jian Zhang +4 more
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Effects of Curvature on the Film Cooling Effectiveness of Double-Jet Film Cooling
Volume 5B: Heat Transfer, 2014The effect of curvature on the film cooling characteristics of Double-Jet Film Cooling (DJFC) was numerically investigated using three-dimensional Reynolds-Averaged Navier-Stokes (RANS). The low-Reynolds number shear stress transport (SST) model was employed as the turbulence closure model.
Gaoliang Liao +3 more
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Transactions of the Canadian Society for Mechanical Engineering, 1991
Measurements of the flow field and film cooling effectiveness downstream of a two-dimensional inclined slot were made. A two-dimensional numerical model solving the transport equations in curvilinear orthogonal coordinate system was developed to simulate film cooling process. Comparisons were made between numerical and experimental results.
I. Gartshore, M. Salcudean, P. Matys
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Measurements of the flow field and film cooling effectiveness downstream of a two-dimensional inclined slot were made. A two-dimensional numerical model solving the transport equations in curvilinear orthogonal coordinate system was developed to simulate film cooling process. Comparisons were made between numerical and experimental results.
I. Gartshore, M. Salcudean, P. Matys
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Film Cooling Characteristic of Double-Fan-Shaped Film Cooling Holes
Volume 3: Heat Transfer, Parts A and B, 2009The film cooling performance downstream of a single row of double-fan-shaped film cooling holes in a flat plate have been investigated by experimental measurements and numerical simulation. The entrance and exit of double-fan-shaped holes are comprised of a lateral expansion of 15° from the original simple cylindrical shape with stream-wise inclination
Jiang-Tao Bai +2 more
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Directional Effects of Effusion Cooling on the Cooling Film Effectiveness
AIAA Journal, 2021Effusion 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
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Multiple Slot Laminar Film Cooling
AIAA Journal, 1972An analytical investigation is presented showing the effect of film cooling using single and double slots. The analysis considers the tangential injection of a gas of the same molecular weight as the main flow into a laminar boundary layer. Results in terms of heat transfer to the wall are presented for different slot heights, and injection velocities
A. SHERMAN +3 more
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Exploitation of Acoustic Effects in Film Cooling
Journal of Engineering for Gas Turbines and Power, 2014There have been numerous studies of the behavior of shaped film cooling holes for turbine applications. It is known that the introduction of coolant is an unsteady process, and a handful of studies have described and characterized the unsteadiness. To the best of our knowledge, there are no studies in which unsteady acoustic effects have been actively ...
Collins, M, Povey, T
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