Results 251 to 260 of about 102,556 (307)

Effect of film hole geometry and blowing ratio on film cooling performance

Applied Thermal Engineering, 2020
Abstract In this paper, four kinds of film holes (cylindrical hole, fan-shaped hole, anti-vortex hole and sister hole) are experimentally and numerically studied to investigate the effect of hole geometry and blowing ratio on film cooling performance and flow structure.
Nan Cao, Xue Li, Zeyu Wu, Xiang Luo
openaire   +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   +3 more sources

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
openaire   +1 more source

Influence of Blow-Up Ratio on Properties of Cellulose Packaging Films by Blow-Extrusion Process

Advanced Materials Research, 2011
The blow-extruded tube-like regeneration cellulose films in different blow-up ratios were prepared by NMMO technology. It was studied the effect of different blow-up ratio on the mechanical and obstructing properties as well as the morphology cross-section of cellulose blown films.
Tian Lan, Jian Qing Wang, Zheng Wei Jin
openaire   +1 more source

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   +2 more sources

Jets in a Crossflow: Effects of Geometry and Blowing Ratio

Journal of Fluids Engineering, 1999
The flow field characteristics of three different geometries of square jets in a crossflow at various blowing ratios are examined. The geometries considered are: perpendicular, streamwise-inclined, and spanwise-inclined jets. The inclined jets are at a 30 deg angle to the wind tunnel floor.
M. J. Findlay, M. Salcudean, I. S. Gartshore   +2 more
openaire   +1 more source

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, Xiaoliang Wan, Sumanta Acharya   +2 more
openaire   +1 more source

Effect of blowing ratio on the relaminarization phenomenon over convex curved wall

Acta Mechanica Sinica, 2022
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Su, Wei-Yi, Zhang, Feng-Rui, Wang, Mou-Yuan   +2 more
openaire   +2 more sources