2016
DOI: 10.1115/1.4034851
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Abstract: An advanced, high-effectiveness film cooling design, the antivortex hole (AVH) has been investigated by several research groups and shown to mitigate or counter the vorticity generated by conventional holes and increase film effectiveness at high blowing ratios and low freestream turbulence levels. The effects of increased turbulence on an AVH geometry were previously investigated in a preliminary steady computational fluid dynamics (CFD) study by Hunley et al. on the film effectiveness and net heat flux reduc… Show more

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Cited by 9 publications
(2 citation statements)
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“…The results [1,2] show that the improvement of film cooling effectiveness is mainly to restrain the development of the kidney vortex and reduce the normal penetration ability of cooling jet to the mainstream. In the novel film cooling schemes, researchers have designed combined-hole [3,4], antivortex hole [5,6], trench [7,8], and ridge-shaped tabs [9,10] to suppress the strength of the kidney vortex. However, with the development trend of gas turbines, the combustor outlet temperature continues to increase for higher recycling efficiency, and the single cooling method cannot fulfill the requirements.…”
Section: Introductionmentioning
confidence: 99%
“…The results [1,2] show that the improvement of film cooling effectiveness is mainly to restrain the development of the kidney vortex and reduce the normal penetration ability of cooling jet to the mainstream. In the novel film cooling schemes, researchers have designed combined-hole [3,4], antivortex hole [5,6], trench [7,8], and ridge-shaped tabs [9,10] to suppress the strength of the kidney vortex. However, with the development trend of gas turbines, the combustor outlet temperature continues to increase for higher recycling efficiency, and the single cooling method cannot fulfill the requirements.…”
Section: Introductionmentioning
confidence: 99%
“…With respect to film cooling, various of factors have significant effects on the film cooling performance according to the review conducted by Bogard and Thole (2006), for instance, blowing ratio (Wu et al , 2016), freestream turbulence (Repko et al , 2016), configuration of film hole (Dittmar et al , 2003; Lu et al , 2007; Li et al , 2017), as well as surface curvature (Qin et al , 2016). As reviewed by Acharya and Kanani (2017), inclined holes with an injection angle of 30 degrees are widely adopted in film cooling structures in view of cooling performance and manufacturing techniques.…”
Section: Introductionmentioning
confidence: 99%