Results 241 to 250 of about 14,470 (301)
Unexpected Primary Spontaneous Pneumothorax in a Non-smoking Patient After Blowing Out Birthday Candles. [PDF]
CureusLaouar L, Dammene Debbih N.
europepmc +1 more source
Cellular Structure Optimization in Microwave-Assisted Foaming of Acrylated Epoxidized Soybean Oil. [PDF]
ACS OmegaVignali A, Bertini F, Iannace S.
europepmc +1 more source
Quantifying Blowing Ratio for Shaped Cooling Holes
Journal of Turbomachinery, 2017 Effusion cooling has been a popular technology integrated into the design of gas turbine combustor liners. A staggering amount of research was completed that quantified performance with respect to operating conditions and cooling hole geometric properties; however, most of these investigations did not address the influence of the manufacturing process ...
D. J. Cerantola, A. M. Birk
core +3 more sources
On steady and pulsed low-blowing-ratio transverse jets
Journal of Fluid Mechanics, 2013 AbstractThe present experimental and numerical study focuses on the vortical structures encountered in steady and pulsed low-blowing-ratio transverse jets ($0. 150\leq \mathit{BR}\leq 4. 2$), a configuration hardly discussed in the literature. Under unforced conditions at low blowing ratio, a stable leading-edge shear-layer rollup is identified inside ...
Bidan, G., Nikitopoulos, D. E.
openaire +3 more sources
Effect of Uncertainty in Blowing Ratio on Film Cooling Effectiveness
Volume 3: Gas Turbine Heat Transfer; Transport Phenomena in Materials Processing and Manufacturing; Heat Transfer in Electronic Equipment; Symposium in Honor of Professor Richard Goldstein; Symposium in Honor of Prof. Spalding; Symposium in Honor of Prof. Arthur E. Bergles, 2013 In this study the effect of randomness of blowing ratio on film cooling performance is investigated by combining direct numerical simulations with a stochastic collocation approach. The geometry includes a 35-degree inclined jet with a plenum attached to it. The blowing ratio variations are assumed to have a truncated Gaussian distribution with mean of
Hessam Babaee +2 more
core +3 more sources
Optimization of the blowing ratio for film cooling on a flat plate
International Journal of Numerical Methods for Heat & Fluid Flow, 2017 Purpose The purpose of this paper is to report the result of a numerical investigation of film cooling performance on a flat plate for finding optimum blowing ratios. Design/methodology/approach Steady-state simulations have been performed, and the flow has been considered incompressible. Calculations have been performed with 3D finite-volume method
Mojtaba Kazemi Kelishami, Esmail Lakzian
openaire +2 more sources
The Role of Density Ratio and Blowing Ratio on Film Cooling in a Vane Passage
Volume 4: Heat Transfer, Parts A and B, 2010 Temperature and heat flux measurements have been obtained in a film-cooled, heated fixed-vane cascade. The cascade facility has the capability to deliver high-pressure air through the vane passages at high flow rates (3.5 lbm/s; 1.59 kg/s). Prior to entering the vane test section, pressurized mainstream air has been heated by a natural gas-burning ...
James W. Post, Sumanta Acharya
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Effect of the Blowing Ratio on the Interaction Between a Flame and an Air-Cooled Combustor Wall
Volume 7A: Heat Transfer — Combustors; Film Cooling, 2023 Abstract Innovative low-carbon aero-engines rely on ultra-compact and high energy density combustors, increasing the thermal loads of the walls. This study aims at experimentally enhancing the understanding of the interrelated physical processes between a flame, a wall and a cooling technology.
Antoine Blaise +3 more
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Study of the Effects of the Blowing Ratio of Vortex Generator Jets in a Low Pressure Turbine
43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2007 as steady jets and can reduce the amount of mass flow needed to maintain control. An experiment using Particle Image Velocimetry (PIV) has been performed to study the interaction of the VGJ flow with the flow around the airfoils. A cascade of low pressure turbine blades was mounted in the test section of a low speed wind tunnel.
Woods, Nathan +3 more
openaire +2 more sources