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Study on the dynamic characterization of droplets hitting superhydrophobic tubular walls

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Indexed by:Journal Papers

Date of Publication:2017-08-15

Journal:Journal of Thermal Science and Technology

Included Journals:CSCD

Volume:16

Issue:4

Page Number:280-286

ISSN No.:1671-8097

Key Words:液滴撞击;超疏水壁面;管状壁面;动态特性

Abstract:利用相界面追踪的CLSVOF(coupled level set and volume of fluid)方法,对液滴在不同速度下撞击超疏水管状壁面的演化过程展开研究.研究结果表明,不同初速度会对液滴在管壁上的动态特性产生较大影响.当撞击速度较小时,液膜会以整体的形态反弹;继续增大撞击速度后,由于受到外缘液膜的牵扯,液膜内部开始出现断裂;撞击速度足够大时,液膜发生解体破碎.同时给出了对于初速度在2.00 m/s以内、直径为2.58 mm的水滴撞击管径为8.00 mm的超疏水壁面时运动状态发生转变的临界条件.

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