Results 261 to 270 of about 71,914 (314)

Film Cooling Characteristic of Double-Fan-Shaped Film Cooling Holes

Volume 3: Heat Transfer, Parts A and B, 2009
The 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, Hui-ren Zhu, Cun-liang Liu   +2 more
openaire   +1 more source

FILM COOLING EFFECTIVENESS

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
openaire   +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, Patrick Richer, Bertrand Jodoin, Yeongmin Pyo, Sean Yun, Zekai Hong   +5 more
openaire   +1 more source

Multiple Slot Laminar Film Cooling

AIAA Journal, 1972
An 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, H. YEH, E. RESHOTKO, E. MCASSEY, JR.   +3 more
openaire   +1 more source

Exploitation of Acoustic Effects in Film Cooling

Journal of Engineering for Gas Turbines and Power, 2014
There 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
openaire   +2 more sources

Cooling Effectiveness on Film Cooled Turbine Blades

Heat Transfer: Volume 5 — Computational, Aerospace and Environmental Heat Transfer, 2001
Abstract 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
openaire   +1 more source

Adiabatic Film Cooling Effectiveness Measurements Throughout Multirow Film Cooling Arrays

Journal of Turbomachinery, 2017
Adiabatic 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, Little, Zachary, Kapat, Jayanta S., Dees, Jason E.   +3 more
openaire   +2 more sources

Film cooling performance for the cratered film-cooling holes with various coolant crossflow orientations

Numerical Heat Transfer, Part A: Applications, 2021
The present study investigates the influence of the coolant crossflow orientation on the cooling performance for the cratered film-cooling hole.
Chao Zhang, Linchao Bai, Zhiting Tong, Artem Khalatov   +3 more
openaire   +1 more source

Film Cooling Effectiveness and Heat Transfer of Rectangular-Shaped Film Cooling Holes

Volume 3: Turbo Expo 2002, Parts A and B, 2002
An experimental study has been conducted to measure the local film-cooling effectiveness and the heat transfer coefficient for a single row of rectangular-shaped holes. The holes have a 35° inclination angle with 3 hole diameter spacing of rectangular cross-sections.
Dong Ho Rhee, Youn Seok Lee, Hyung Hee Cho   +2 more
openaire   +1 more source

Film-Cooling Performance and Heat Transfer over an Inclined Film-Cooled Surface

Journal of Thermophysics and Heat Transfer, 2008
Experiments have been performed to study and obtain the adiabatic wall film-cooling effectiveness and the heat transfer over a film-cooled surface that is made inclined at various angles with respect to a uniform flow. The vertical temperature distribution was measured to infer the flow structure and the rate of mixing of the film jet with the ...
C. S. Yang, C. L. Lin, C. Gau
openaire   +1 more source