Abstract
Present numerical investigation proposes to mitigate the effects of Counter rotating vortex pair by employing vortex generator. The common-flow-down arrangement of delta winglet pair is preferred for this investigation Numerical simulation has been carried out to investigate the effect of placement of vortex generator on the characteristics of film cooling effectiveness. Repercussions, of utilizing multiple vortex generator at different downstream location have been detected. Result indicates that Vortex generator, located at up-stream of circular film cooling hole will yield better effectiveness. Reynolds number based on free stream velocity and film cooling-hole dimension is kept at 17000. Moreover consequence, in variation of blowing ratio, density ratio, secondary flow velocity or jet velocity and Turbulent Kinetic Energy on cooling effectiveness has been investigated. Result shows that increment in blowing ratio, jet velocity and Turbulent Kinetic Energy responsible for decrement in cooling effectiveness. The results are compared with baseline case. It has been observed that numerical investigation implementing FLUENT commercial code adopting the k-omega turbulence model perform better.
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