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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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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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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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Adiabatic Film Cooling Effectiveness Measurements Throughout Multirow Film Cooling Arrays
Journal of Turbomachinery, 2017Adiabatic film cooling effectiveness measurements are obtained using pressure-sensitive paint (PSP) on a flat film cooled surface. The effects of blowing ratio and hole spacing are investigated for four multirow arrays comprised of eight rows containing 52 holes of 3.8 mm diameter with 20 deg inclination angles and hole length-to-diameter ratio of 11.2.
Natsui, Greg +3 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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Cooling Effectiveness on Film Cooled Turbine Blades
Heat Transfer: Volume 5 — Computational, Aerospace and Environmental Heat Transfer, 2001Abstract This paper presents experiments on the cooling effectiveness obtained for two different injection locations on the suction side of a turbine blade at transonic flow conditions. Previous results of a computational analysis and flow visualization indicated that a separation bubble is present on the suction side at a location x/L =
M. Derrar, J. Nagler, W. W. Koschel
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Thin-film thermoelectric cooling
Technical Physics, 2009Basic physical features of thermoelectric cooling in p-n structures of a submicrometer thickness, which is manifested even in the linear approximation in current, are investigated. It is shown that a multitem-perature model in which each subsystem of quasi-particles is characterized by its own temperature is effective for studying such structures.
I. M. Lashkevich +2 more
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