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Reducing the aerodynamic drag of high-speed trains by air blowing from the nose part: Effect of blowing speed [PDF]
Journal of Wind Engineering and Industrial Aerodynamics, 2023 To reduce the aerodynamic drag of high-speed trains, this work proposes an air blowing configuration on the head and tail cars of high-speed trains.
Zhengwei Chen +2 more
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Jets in a Crossflow: Effects of Geometry and Blowing Ratio
Journal of Fluids Engineering, 1999The 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 +2 more
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Effect of blowing ratio on the relaminarization phenomenon over convex curved wall
Acta Mechanica Sinica, 2022zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Su, Wei-Yi +2 more
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Influence of Blow-Up Ratio on Properties of Cellulose Packaging Films by Blow-Extrusion Process
Advanced Materials Research, 2011The 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
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Effects of Density and Blowing Ratios on the Turbulent Structure and Effectiveness of Film-Cooling
Volume 5A: Heat Transfer, 2018Large eddy simulations (LES) were performed to investigate film cooling of a flat plate, where the cooling jets issued from a plenum through one row of circular holes of diameter D and length 4.7D that are inclined at 35° relative to the plate.
Zachary T. Stratton, Tom I-P. Shih
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Ratio of nose blow results to intakes during the decommissioning of a facility at Dounreay
Radiation Protection Dosimetry, 2007During the decommissioning of a large glove box facility at Dounreay, in addition to engineering and administration controls, workers wore pressurised suits to minimise their intake of radionuclides. The workers provided nose blows after each suited operation to provide an indication of the effectiveness of protective measures. The nose blows were also
David, Spencer +2 more
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Influence of Blowing Ratio on the Double-Jet Ejection of Cooling Air
Volume 4: Turbo Expo 2007, Parts A and B, 2007Further improvement of the thermal efficiency of modern gas turbines can be achieved by a further reduction of the cooling air amount. Therefore, it is necessary to increase the cooling effectiveness so that the available cooling air fulfils the cooling task even if the amount has been reduced. In particular, the cooling effort for the vanes and blades
Karsten Kusterer +3 more
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Film cooling in the trailing edge cutback with different land shapes and blowing ratios
International Communications in Heat and Mass Transfer, 2021Abstract The cutback was widely used in advanced gas turbines to protect the trailing edge. The land was a main structure in the cutback region. Therefore, the present study describes a numerical investigation on the film cooling performance in the cutback region with various land shapes (straight- expanding land, arch- expanding land, contracting ...
Wei Du +3 more
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Aerodynamics of Low-Blowing-Ratio Fuselage Injection into a Supersonic Freestream
Journal of Spacecraft and Rockets, 2005A parametric characterization of the surface flow structure and associated aerodynamic loading for injection into a Mach 3.0 freestream through jets mounted into the side of missile fuselage (sharp-coned cylinder) was experimentally achieved. The experimental methods included surface oil flow visualization, shadowgraph photography, and pressure ...
Zakaria Mahmud, Rodney D. W. Bowersox
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Effect of film hole geometry and blowing ratio on film cooling performance
Applied Thermal Engineering, 2020Abstract 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
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