Lattice Boltzmann Simulation of Droplet Evaporation on Flat Solid Surface

XIE Chi-yu; ZHANG Jian-ying; WANG Mo-ran

doi:10.3879/j.issn.1000-0887.2014.03.002

Volume 35 Issue 3

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XIE Chi-yu, ZHANG Jian-ying, WANG Mo-ran. Lattice Boltzmann Simulation of Droplet Evaporation on Flat Solid Surface[J]. Applied Mathematics and Mechanics, 2014, 35(3): 247-253. doi: 10.3879/j.issn.1000-0887.2014.03.002

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Lattice Boltzmann Simulation of Droplet Evaporation on Flat Solid Surface

doi: 10.3879/j.issn.1000-0887.2014.03.002

¹Department of Engineering Mechanics, Tsinghua University,Beijing 100084, P.R.China;²College of Engineering, Peking University, Beijing 100871, P.R.China

Funds: The National Natural Science Foundation of China（51176089）; The National Basic Research Program of China (973 Program)（2013CB228301）

Received Date: 2013-09-28
Rev Recd Date: 2013-12-17
Publish Date: 2014-03-15

Abstract

Abstract

Mechanisms of droplet evaporation on flat solid surface were investigated with the Lattice Boltzmann method. Effect of gravity on the droplet shape change during evaporation in the cases of different static contact angles was detailedly analyzed. The results show that, as the droplet size decreases, the gravity effect decreases; and when the size reaches a critical value, the gravity effect grows negligible. This critical value for a water droplet was calculated for specific parameters, which was 50% lower than the value given by the classical capillary theory. Moreover, the inside-droplet flow patterns are also considerably influenced by gravity and the droplet size.
- lattice Boltzmann method,
- droplet evaporation,
- gravity effect,
- multiphase flow

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References(22)

References

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