Enriquez, Oscar R.Peters, Ivo R.Gekle, StephanSchmidt, LauraVersluis, Michelvan der Meer, DevarajLohse, Detlef2009-10-142009-10-142009-10-14https://hdl.handle.net/1813/13967A round disk with a harmonic disturbance impacts on a water surface and creates a non-axisymmetric cavity which collapses under the influence of hydrostatic pressure. We use disks deformed with mode m=2 to m=6. For all mode numbers we find clear evidence for a phase inversion of the cavity wall during the collapse. We present a fluid dynamics video showing high speed imaging of different modes, pointing out the characteristic features during collapse.enCavity collapseFluid dynamicsvideo/moving image