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arXiv 0910.26642009-10-14physics.flu-dyn

非轴对称空腔的坍塌

Collapse of Non-Axisymmetric Cavities

Oscar R. Enriquez, Ivo R. Peters, Stephan Gekle, Laura Schmidt, Michel Versluis, Devaraj van der Meer, Detlef Lohse

DOI：: 10.1063/1.3481432

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摘要：

具有谐波扰动的圆盘撞击水面并产生非轴对称空腔，该空腔在静水压力的影响下塌陷。我们使用以模式m=2至m=6变形的圆盘。对于所有的模式数，我们找到了明确的证据，在崩溃的空腔壁的相反转。我们提出了一个流体动力学的视频显示高速成像的不同模式，指出在崩溃的特点。

英文摘要：

A 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.

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