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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
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Measuring the Physiological Effects of Cooling
Human Factors: The Journal of the Human Factors and Ergonomics Society, 1971Men wear cooling garments to reduce external heat load and to remove metabolic heat. The effects of cooling can be seen in physiological measurements made with and without cooling, and the question is: what are the meaningful measurements to make? The following measurements are described and illustrated with experimental data: tolerance times to a ...
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The Effect of Cowling on the Local Cooling Effectiveness of Engine Air-Cooled Cylinders
SAE Technical Paper Series, 1992<div class="htmlview paragraph">In this work, the effect of providing air-cooled cylinders with cowlings on the local cooling effectiveness was investigated. Cast-iron specimens representing air-cooled cylinders were manufactured with rectangular and trapezoidal fins.
M.S. Radwan, M.A. Shahin
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Numerical Study of the Effect of Blowing Angle on Cooling Effectiveness of an Effusion Cooling
Volume 3: Turbo Expo 2004, 2004The paper numerically investigates the influences of the blowing angle α of coolant flow on the cooling effectiveness of effusion cooling of a plate. Nine cases were studied which cover three blowing angles of α = 30°, 60°, 90° and for each angle three blowing ratios of M = 0.5, 1.0, 2.0 are calculated, respectively.
Yaping Hu, Honghu Ji
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Effect of Hole Shape on Blade Cooling Effectiveness
48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, 2010The high temperature conditions under which turbine blades operate pose a constraint on their service lifetime. One industrial solution is to apply the film cooling and its effectiveness is generally determined by flow condi tions, cooling hole geometry shapes and its orientations.
Khan, J +3 more
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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
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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
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The effect of pre-cooling intensity on cooling efficiency and exercise performance
Journal of Sports Sciences, 2010Although pre-cooling is known to enhance exercise performance, the optimal cooling intensity is unknown. We hypothesized that mild cooling opposed to strong cooling circumvents skin vasoconstriction and thermogenesis, and thus improves cooling efficiency reflected in improved time to exhaustion. Eight males undertook three randomized trials, consisting
Bogerd, N. +4 more
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Cryocrystallography: effect of cooling medium on sample cooling rate
Journal of Applied Crystallography, 1998The rates of cooling of small samples with cold N2gas (100 K), liquid N2(77 K) and liquid propane (100 K) have been measured. The samples were one bare Cu-constantan thermocouple and one coated with a 0.25 mm layer of silicone rubber cement. Gas cooling yielded the lowest rate, liquid N2the highest.
Linda J. Walker +2 more
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Physics Letters A, 1973
Abstract Adiabatic rotation of 4 He in packed powder is shown to provide a new cooling effect. Using a simplified model and some experimental parameters it is estimated that (Δ T / T ) 1°K ≈-0.25°K.
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Abstract Adiabatic rotation of 4 He in packed powder is shown to provide a new cooling effect. Using a simplified model and some experimental parameters it is estimated that (Δ T / T ) 1°K ≈-0.25°K.
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