Abstract

As a hybrid method, many-body dissipative particle dynamics with energy conservation (MDPDe), promises to simulate heat transport process with free surface fluids. However, the temperature-dependent surface tension cannot be modelled accurately in MDPDe so far, which greatly limits its further applications. In the present study, semi-empirical relationships between the attractive coefficient and temperature obtained by mapping with real liquids (i.e., water, ethylene glycol and benzaldehyde) are introduced into MDPDe. The simulation results are validated by comparing with the relevant experimental, theoretical and numerical results, respectively. The improved MDPDe model in the present work opens the door to study various thermocapillary phenomena with free surface fluids at mesoscopic scale.

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