Results 271 to 280 of about 167,722 (364)
Some of the next articles are maybe not open access.
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
openaire +1 more source
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
openaire +2 more sources
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
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
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
openaire +1 more source
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
openaire +1 more source
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
openaire +2 more sources
Journal of turbomachinery, 2020
Film-hole can be often blocked by thermal-barrier coatings (TBCs) spraying, resulting in the variations of aerodynamic and thermal performances of film cooling.
Fu-qiang Wang +3 more
semanticscholar +1 more source
Film-hole can be often blocked by thermal-barrier coatings (TBCs) spraying, resulting in the variations of aerodynamic and thermal performances of film cooling.
Fu-qiang Wang +3 more
semanticscholar +1 more source
Adiabatic Film Cooling Effectiveness Measurements Throughout Multi-Row Film Cooling Arrays
Volume 5C: Heat Transfer, 2016Adiabatic 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 multi-row arrays comprised of 8 rows containing 52 holes of 3.8 mm diameter with 20° inclination angles and hole length-to-diameter ratio of 11.2.
Greg Natsui +5 more
openaire +2 more sources
Multihole cooling film effectiveness and heat transfer
Thermophysics and Heat Transfer Conference, 1974Adiabatic film effectiveness and heat transfer measurements with injection of secondary air through arrays of holes in a flat plate into a turbulent boundary layer are presented. Measurements were taken both within and downstream of the multihole pattern for different hole pitch-to-diameter ratios and blowing rates.
R. E. Mayle, F. J. Camarata
openaire +1 more source
Cooling Effectiveness for a Shaped Film Cooling Hole at a Range of Compound Angles
Journal of turbomachinery, 2018Shaped film cooling holes are a well-established cooling technique used in gas turbines to keep component metal temperatures in an acceptable range. One of the goals of film cooling is to reduce the driving temperature for convection at the wall, the ...
Shane Haydt, S. Lynch
semanticscholar +1 more source