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Film-Cooling Effectiveness From Shaped Film Cooling Holes for a Gas Turbine Blade
Volume 4: Heat Transfer, Parts A and B, 2008The effect of film cooling holes placed along the span of a fully-cooled high pressure turbine blade in a stationary, linear cascade on film cooling effectiveness is studied using the Pressure Sensitive Paint (PSP) technique. Six rows of compound angled shaped film cooling holes are provided on the pressure side while four such rows are provided on the
Shantanu Mhetras +2 more
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Film Cooling Effectiveness for Short Film Cooling Holes Fed by a Narrow Plenum
Journal of Turbomachinery, 1999The adiabatic, steady-state liquid crystal technique was used to measure surface adiabatic film cooling effectiveness values in the near-hole region X/D<10. A parametric study was conducted for a single row of short holes L/D⩽3 fed by a narrow plenum H/D=1.
C. A. Hale +2 more
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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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Double-Jet Film-Cooling for Highly Efficient Film-Cooling With Low Blowing Ratios
Volume 4: Heat Transfer, Parts A and B, 2008Further 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 +4 more
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Computations of Pulsed Film-Cooling
Volume 4: Turbo Expo 2007, Parts A and B, 2007Direct Numerical Simulation (DNS) of a pulsed film cooling jet is presented to examine if pulsations of the coolant jet can enhance film cooling effectiveness. Calculations are performed for a cylindrical jet inclined at 30-degrees. The jet pulsation is defined by the duty cycle (DC) and the Strouhal number (St), both of which are varied in the present
Frank Muldoon, Sumanta Acharya
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Thermoelectric cool-film flow sensor
2012 IEEE Sensors, 2012Hemodynamics, specifically, fluid shear stress, plays an important role in the formation of arterial plaque known as atherosclerosis. For this application, hot-wire anemometers, being a robust and highly sensitive method for measuring flow properties, have a limitation in their sensitivity due to the effects of locally increasing temperature on nearby ...
Jonathon Oiler +4 more
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Analysis of Film Cooling and Full-Coverage Film Cooling of Gas Turbine Blades
Journal of Engineering for Gas Turbines and Power, 1984Film cooling has become a standard method for the protection of the skin of gas turbine blades against the influence of the hot gas stream. The cooling air is usually injected into the boundary layer covering the skin through one or two rows of holes.
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"Film Cooling Numerical Simulation"
2001(Invited Lecturer)Novembre ...
MARTELLI, FRANCESCO, ADAMI P.
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