Numerical investigation of water entry of half hydrophilic and half hydrophobic spheres
type: Item
instance of: scholarly article
title: Numerical investigation of water entry of half hydrophilic and half hydrophobic spheres
zbMATH Open document ID: 1400.76020
DOI: 10.1155/2016/5265818
author: Sun Zhao
author: Cao Wei
author: Wang Cong
published in: Mathematical Problems in Engineering
publication date: 2018-10-12T00:00:00Z
review text: Summary: A numerical simulation to investigate the water entry of half-half sphere which is hydrophobic on one hemisphere and hydrophilic on the other is performed. Particular attention is given to the simulation method based on solving the Navier-Stokes equations coupled with VOF (volume of fluid) method and CSF (continuum surface force) method. Numerical results predicted experimental results, validating the suitability of the numerical approach to simulate the water entry problem of sphere under different wetting conditions. Numerical results show that the water entry of the half-half sphere creates an asymmetric cavity and ``cardioid'' splash, causing the sphere to travel laterally from the hydrophobic side to the hydrophilic side. Further investigations show that the density ratio and mismatch of asymmetric in wetting condition affect the trajectory, velocity, and acceleration of the half-half sphere during water entry. In addition, the total hydrodynamic force coefficient is investigated as a result of the forces acting on the sphere during water entry dictated by the cavity formation.
Mathematics Subject Classification ID: 76B10
zbMATH DE Number: 6953292
Wikidata QID: Q59131519
MaRDI profile type: Publication
full work available at URL: https://doi.org/10.1155/2016/5265818
OpenAlex ID: W2530257138
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description: scientific article; zbMATH DE number 6953292