LARGE EDDY SIMULATION OF FILM COOLING FLOW ABOVE A FLAT PLATE FROM INCLINED CYLINDRICAL HOLES

被引：0

作者：

Iourokina, Ioulia V. ^{[1
]}

Lele, Sanjiva K. ^{[1
]}

机构：

[1] Stanford Univ, Dept Aeronaut & Astronaut, Stanford, CA 94305 USA

来源：

PROCEEDINGS OF THE ASME FLUIDS ENGINEERING DIVISION SUMMER CONFERENCE, VOL 1, PTS A AND B | 2006年

关键词：

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Large Eddy Simulation of a realistic film cooling configuration is performed, consisting of a large plenum feeding a periodic array of short film cooling holes with length to diameter ratio L/d = 3.5. Film cooling jets are issued at 35 degrees into the turbulent crossflow boundary layer above the flat surface. Time-averaged flowfield is analyzed to reveal steady and unsteady structures occurring as a result of plenum-jet-crossflow interactions. Among these structures are the flow separation inside the film-hole, reverse flow zone right behind the jet injection and the counter-rotating vortex pair in the wake of the jet. All of these structures influence the wall temperature distribution and have a negative effect on film cooling effectiveness.

引用

页码：817 / 825

页数：9

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