Shinde, Sachin Y. Arakeri, Jaywant H. Movie 2 from Physics of unsteady thrust and flow generation by a flexible surface flapping in the absence of free stream This video is for the airfoil without flexible flap, i.e., with rigid trailing edge. The weak and widespread jet is oriented prominently in the inclined-upward direction. However, a longer visualization would show the jet-meandering mentioned in section 3 of the main paper. Note: The airfoil casts moving shadow in the upper half of the window. flapping foil;flexibility;propulsion;hovering;fluid–structure interaction;swimming;flying 2018-10-10
    https://rs.figshare.com/articles/media/Movie_2_from_Physics_of_unsteady_thrust_and_flow_generation_by_a_flexible_surface_flapping_in_the_absence_of_free_stream/7188605
10.6084/m9.figshare.7188605.v1