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Insights into Leading Edge Vortex Formation and Detachment on a Pitching and Plunging Flat Plate
Johannes Kissing, Jochen Kriegseis, Zhenyao Li +3
The present study is a prelude to applying different flow control devices on pitching and plunging airfoils with the intention of controlling the growth of the leading edge vortex…
Delaying Leading Edge Vortex Detachment by Plasma Flow Control at Topologically Critical Locations
Johannes Kissing, Bastian Stumpf, Jochen Kriegseis +2
Flapping wing propulsion offers unrivalled manoeuvrability and efficiency at low flight speeds and in hover. These advantages are attributed to the leading edge vortex developing o…
Leidenfrost temperature in sprays: role of the substrate and liquid properties
Fabian M. Tenzer, Julian Hofmann, Ilia V. Roisman +1
In this study the Leidenfrost temperature during spray cooling of very hot substrates is experimentally measured. The spray parameters, i.e. the drop diameters and velocities and t…
Fingering instability of a stretched liquid bridge
Sebastian Brulin, Ilia V. Roisman, Cameron Tropea
When a liquid viscous bridge between two parallel substrates is stretched by accelerating one substrate, its interface recedes in the radial direction. In some cases the interface…
The interaction of inner and outer surface corners during spontaneous wetting
Felix Gerlach, Maximilian Hartmann, Cameron Tropea
Real world surfaces can often be modeled as a collection of edges, corners, dents or spikes of varying roundness. These features exhibit individual spontaneous wetting behaviors co…
Sinusoidal-gust generation with a pitching and plunging airfoil
Nathaniel J. Wei, Johannes Kissing, Cameron Tropea
The generation of uniform, periodic gust disturbances in an experimental context is demonstrated using a single oscillating airfoil. A pitching and heaving symmetric airfoil is sug…