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液滴撞击超疏水管状壁面的动态特性研究

Release Time:2019-03-11  Hits:

Indexed by: Journal Article

Date of Publication: 2017-08-15

Journal: 热科学与技术

Included Journals: CSCD

Volume: 16

Issue: 4

Page Number: 280-286

ISSN: 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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