VORTEX SHEDDING IN FLOW PAST AN INCLINED FLAT PLATE AT HIGH

7th International Symposium on Turbulence and Shear Flow Phenomena

INCIDENCE ; Bjørnar Pettersen ; Department of Marine Technology ; Vagesh D. Narasimhamurthy ; Department of Energy ; Process Engineering

PID  :  125598

来源: CEUR

【 摘 要 】

The properties of asymmetric wake pattern behind a flatplate inclined at angle of attack 20, 25 and 30 degrees areinvestigated. The Reynolds number based on the plate lengthis 1000. Both twodimensional and threedimensionalcalculations are performed by direct numerical simulation.The threedimensional simulation is in better agreement withthe experimental data. The asymmetric mean wake flow andcoherent patterns in the threedimensional simulations are alsorevealed by the time and phaseaveraged techniques andderived the turbulent properties. Unlike the symmetric wakeflow, the vortices shed from the leading and trailing edgespossess unequal strength. The vortices shed from the trailingedge possess higher strength. The threedimensionalsimulation results compare very well with the experimental