Results 281 to 290 of about 167,722 (364)
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Film Cooling Effectiveness and Heat Transfer of Rectangular-Shaped Film Cooling Holes
Volume 3: Turbo Expo 2002, Parts A and B, 2002An experimental study has been conducted to measure the local film-cooling effectiveness and the heat transfer coefficient for a single row of rectangular-shaped holes. The holes have a 35° inclination angle with 3 hole diameter spacing of rectangular cross-sections.
Dong Ho Rhee +2 more
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Effect of Pulsed Film Cooling on Leading Edge Film Effectiveness
Journal of Turbomachinery, 2010Detailed film effectiveness measurements have been made on a cylindrical leading edge surface for steady and pulsating flows. The film hole is off centered by 21.5 deg from the centerline and angled 20 deg to the surface and 90 deg from the streamwise direction. Two jet-to-cross-flow velocity ratios have been considered: VR=1 and 2, which correspond to
Lamyaa A. El-Gabry, Richard B. Rivir
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Effect of Rotation on Flow Field and Film Cooling Effectiveness in Film-Cooled Turbine Rotors
International Journal of Turbo & Jet-Engines, 2014AbstractExperimental and numerical investigations of flow field in a film-cooled turbine model under stationary and rotating conditions in a low-speed wind tunnel are conducted. The effects of different blowing ratios (M = 1.5, 2) on the flow field are studied.
Xiaocheng Zhu, Liangliang Liu, Feng Yuan
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Numerical investigation of adiabatic film cooling effectiveness through compound angle variations
, 2020Provided are numerically predicted distributions of film cooling effectiveness for single cylinder film holes and for single 15° forward diffused film cooling holes, with compound angles ranging from 0° to 180°.
S. Tamang +6 more
semanticscholar +1 more source
Journal of turbomachinery, 2018
Internal coolant passages of gas turbine vanes and blades have various orientations relative to the external hot gas flow. As a consequence, the inflow of film cooling holes varies as well.
M. Fraas +3 more
semanticscholar +1 more source
Internal coolant passages of gas turbine vanes and blades have various orientations relative to the external hot gas flow. As a consequence, the inflow of film cooling holes varies as well.
M. Fraas +3 more
semanticscholar +1 more source
Rotational effects on film cooling performance
International Journal of Numerical Methods for Heat & Fluid Flow, 2012PurposeNumerical simulations were carried out for two cooling schemes, a circular hole and a louver cooling scheme, at the leading edge of a rotor blade in a complete turbine stage.Design/methodology/approachTwo holes were positioned at the leading edge of a rotating blade, one on the pressure side and the other on the suction side. The methodology was
C.X‐Z. Zhang, I. Hassan
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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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Journal of turbomachinery, 2019
This study is concerned with the film cooling effectiveness of the flow issuing from the gap between the nozzle guide vane (NGV) and the transition duct on the NGV endwall, i.e., the purge slot.
G. Müller +3 more
semanticscholar +1 more source
This study is concerned with the film cooling effectiveness of the flow issuing from the gap between the nozzle guide vane (NGV) and the transition duct on the NGV endwall, i.e., the purge slot.
G. Müller +3 more
semanticscholar +1 more source
Influence on film cooling effectiveness of novel holes based on cylindrical configurations
Numerical Heat Transfer, Part A Applications, 2019In this study, four novel film cooling hole designs, all based on cylindrical holes, are numerically evaluated, and compared with those of a simple cylindrical hole and a laterally-diffused shaped hole.
R. Zhu, T. Simon, G. Xie
semanticscholar +1 more source