A Blacklight Ballet: Flow visualization reveals intricacies in the wake of a ...

“A Blacklight Ballet: Flow visualization reveals intricacies in the wake of a streamwise-oscillating cylinder Morgan Hooper, Graduate Aerospace Laboratories, California Institute of Technology Maysam Shamai, Graduate Aerospace Laboratories, California Institute of Technology Beverley McKeon, Graduate Aerospace Laboratories, California Institute of Technology DOI: The wake of a streamwise-oscillating cylinder maintains an imprint of the classical Von Kármán vortex street; however the motion of the cylinder gives rise to an intricate dance of vortices not seen in the stationary case. Flow visualization using fluorescent dye illuminates these intricacies, and provides an intuitive picture of the behaviour of wake vorticity. See other videos from the 2019 Gallery of Fluid Motion: “