Frozen Impacted Drop: From Fragmentation to Hierarchical Crack Patterns

被引:52
作者
Ghabache, Elisabeth [1 ]
Josserand, Christophe
Seon, Thomas
机构
[1] Univ Paris 06, Sorbonne Univ, UMR 7190, Inst Jean Le Rond dAlembert, F-75005 Paris, France
关键词
DESICCATION;
D O I
10.1103/PhysRevLett.117.074501
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We investigate experimentally the quenching of a liquid pancake, obtained through the impact of a water drop on a cold solid substrate (0 degrees C to -60 degrees C). We show that, below a certain substrate temperature, fractures appear on the frozen pancake and the crack patterns change from a 2D fragmentation regime to a hierarchical fracture regime as the thermal shock increases. The different regimes are discussed and the transition temperatures are estimated through classical fracture scaling arguments. Finally, a phase diagram presents how these regimes can be controlled by the drop impact parameters.
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页数:5
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