Effect of Surface Excess Energy Transport on the Rupture of an Evaporating Film

Effect of Surface Excess Energy Transport on the Rupture of an Evaporating Film
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表面过剩能量传输对蒸发膜破裂的影响

DOI:
10.1007/s12217-017-9585-2
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发表时间:
2018-05
期刊:
Microgravity-Science and Technology
影响因子:
--
通讯作者:
Liu Rong
Liu Rong
中科院分区:
其他
文献类型:
--
作者:
Luo Yan;Zhou Jianqiu;Yang Xia;Liu Rong

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在现有的关于蒸发膜不稳定性的工作中,能量边界条件只考虑了蒸发潜热和液体中的热传导的贡献。我们在蒸发液-汽界面上使用了一个新的广义能量边界条件,其中包含了Gibbs过剩能量输运的贡献。我们推导了描述蒸发薄膜动力学的耦合薄膜厚度和界面温度的长波方程。计算结果表明,由于范德华力、蒸发效应和蒸气反冲的作用,Gibbs过剩内能的输运延迟了薄膜的破裂。
In most of existing works on the instabilities of an evaporating film, the energy boundary condition only takes into account contributions of the evaporation latent heat and the heat conduction in the liquid. We use a new generalized energy boundary condition at the evaporating liquid-vapor interface, in which the contribution of the transport of the Gibbs excess energy is included. We have derived the long-wave equations in which the thickness of film and the interfacial temperature are coupled to describe the dynamics of an evaporating thin film. The results of our computation show that the transport of the Gibbs excess internal energy delay the rupture of thin films due to van de Waals force, evaporating effect and vapor recoil.
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