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A mesoscopic simulation of static and dynamic wetting using many-body dissipative particle dynamics

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Abstract

A many-body dissipative particle dynamics simulation is applied here to pave the way for investigating the behavior of mesoscale droplets after impact on horizontal solid substrates. First, hydrophobic and hydrophilic substrates are simulated through tuning the solid–liquid interfacial interaction parameters of an innovative conservative force model. The static contact angles are calculated on homogeneous and several patterned surfaces and compared with the predicted values by the Cassie’s law in order to verify the model. The results properly evaluate the amount of increase in surface superhydrophobicity as a result of surface patterning. Then drop impact phenomenon is studied by calculating the spreading factor and dimensionless height versus dimensionless time and the comparisons made between the results and the experimental values for three different static contact angles. The results show the capability of the procedure in calculating the amount of maximum spreading factor, which is a significant concept in ink-jet printing and coating process.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Isfahan University of Technology, Isfahan, 8415683111, Iran

    Najmeh Ghorbani & Ahmadreza Pishevar

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  1. Najmeh Ghorbani
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  2. Ahmadreza Pishevar
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Correspondence to Ahmadreza Pishevar.

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Ghorbani, N., Pishevar, A. A mesoscopic simulation of static and dynamic wetting using many-body dissipative particle dynamics. Comp. Part. Mech. 5, 113–123 (2018). https://doi.org/10.1007/s40571-017-0157-4

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  • DOI: https://doi.org/10.1007/s40571-017-0157-4

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