TY - GEN
T1 - Large eddy simulation of film cooling flow above a flat plate from inclined cylindrical holes
AU - Iourokina, Ioulia V.
AU - Lele, Sanjiva K.
PY - 2006
Y1 - 2006
N2 - 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.
AB - 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.
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U2 - 10.1115/fedsm2006-98282
DO - 10.1115/fedsm2006-98282
M3 - Conference contribution
SN - 0791847500
SN - 9780791847503
T3 - Proceedings of ASME Fluids Engineering Division Summer Meeting 2006, FEDSM2006
SP - 817
EP - 825
BT - Proceedings of ASME Fluids Engineering Division Summer Meeting 2006, FEDSM2006
PB - American Society of Mechanical Engineers
T2 - 2006 ASME Joint U.S.- European Fluids Engineering Division Summer Meeting, FEDSM2006
Y2 - 17 July 2006 through 20 July 2006
ER -