26th Annual International Conference of Iranian Society of Mechanical Engineers , 2018-04-24

Title : ( Hydrophobic Impact of a Droplet on a Solid Cylinder: Experiments and Simulations )

Authors: Seyedjavad pishbin , Alireza Sheikhi Lotfabadi , Javid Zohrabi Chakaneh , Mohammad Passandideh-Fard ,

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Abstract

In this paper, the impact of water drops on hydrophobic cylinders is studied using both experiments and simulations. The diameter of the generated water droplets is 2.54mm. A high speed camera is used to capture photos of the impact with a time step of 1ms . The diameters of the cylinders used ranged from 0.48mm to 1.62mm. After the impact, the droplet separates into two different sub - droplets at each side of the cylinder. Smaller secondary droplets are also generated after the impact. A change in the behavi or of the drop after the impact is observed compared to the impact on hydrophilic cylinders. The effect of changing the location of the impact and the off - centric collision is also researched. A numerical simulation of the impact is also obtained using the interFoam solver of the OpenFoam software. The technique used by the solver is the volume - of - fluid (VOF) method. The numerical simulations are then validated by a comparison of the results with those of the experimental images.

Keywords

, Droplet Impact, Cylindrical Surfaces, Hydrophobic Surfaces, Numerical Simulation
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@inproceedings{paperid:1072125,
author = {Pishbin, Seyedjavad and Sheikhi Lotfabadi, Alireza and Zohrabi Chakaneh, Javid and Passandideh-Fard, Mohammad},
title = {Hydrophobic Impact of a Droplet on a Solid Cylinder: Experiments and Simulations},
booktitle = {26th Annual International Conference of Iranian Society of Mechanical Engineers},
year = {2018},
location = {سمنان, IRAN},
keywords = {Droplet Impact; Cylindrical Surfaces; Hydrophobic Surfaces; Numerical Simulation},
}

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%0 Conference Proceedings
%T Hydrophobic Impact of a Droplet on a Solid Cylinder: Experiments and Simulations
%A Pishbin, Seyedjavad
%A Sheikhi Lotfabadi, Alireza
%A Zohrabi Chakaneh, Javid
%A Passandideh-Fard, Mohammad
%J 26th Annual International Conference of Iranian Society of Mechanical Engineers
%D 2018

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