A High-Speed PIV Study on Trailing-Edge Noise Sources

摘要: Airframe noise is essentially due to the interaction of unsteady, mostly turbulent flow with structure airplane, particularly caused by vortical flows around edges or over open cavities. A classical problem in this field trailing edge noise, which involves different generating mechanisms. Extensive investigations have been conducted on airfoil- and flat plate edges. According [380, 381, 382] major contribution provided span-wise component vorticity, corresponding dipole (”principal dipole”) sc. perturbed Lamb vector being perpendicular plane plate. numerical simulation can be performed, based such HS-PIV input data.