... are the influences on adiabatic film cooling effectiveness [ 1 – 3 ] and the discharge coefficient [ 4 – 8 ]. Thole et al. [ 5 ] noted that the coolant supply crossflow substantially alters the flow field inside a film hole and therefore affects the film-cooling effectiveness distribution downstream of the hole...

... Institute (IGTI) of ASME for publication in the J ournal of T urbomachinery . 06 11 2023 26 07 2024 29 07 2024 03 09 2024 Graphical Abstract Figure trailing edge coolant injection secondary cooling film cooling effectiveness PSP technique National...

... film-cooling flow back to the surface and increase its lateral spreading on the surface (GT2020–14317). In this study, computations and measurements were performed to examine the flow mechanisms this vortex generator induces to improve film-cooling effectiveness of a flat plate with the cooling flow...

...Cun-Liang Liu; Bing-Ran Li; Hui Song; Lei Chen; Rui Wang; Yong-Ming Wang; Da-Peng Liang Diffusion shaped holes are widely used on aero-engine turbine blades for film cooling. The effect of the spanwise-expansion angle and spanwise width of the hole exit on the film cooling effectiveness...

... technology is required. The film cooling effectiveness distribution over the blade under the effect of wake was obtained by the pressure-sensitive paint (PSP) technique. The test blade has five rows of chevron film holes on the pressure side, three rows of cylindrical film holes on the leading edge...

... of BR, the decrement of film cooling effectiveness caused by blockage rapidly increased. At BR = 1.5, the decrement could be acquired up to 70% for a blockage ratio of 20%. The decrement of film cooling effectiveness caused by blockage was nearly nonsensitive to the injection angle; however, the larger...