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Simulation of micron-scale drop impact

Klitz, Margrit and Griebel, Michael (2019) Simulation of micron-scale drop impact. Computers and Mathematics with Applications. Elsevier. ISSN 0898-1221 (Submitted)

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Abstract

The numerical simulation of droplet impact is of interest for a vast variety of industrial processes, where practical experiments are costly and time-consuming. In these simulations, the dynamic contact angle is a key parameter, but the modeling of its behavior is poorly understood so far. One of the few models which considers the overall physical context of the involved `moving contact line problem' is Shikhmurzaev's interface formation model. In addition to keeping the problem well-posed, all surface and bulk parameters, such as the contact angle, are determined as part of the solution rather than being prescribed functions of contact line speed. In this article, we couple an asymptotic version of the interface formation model with our three-dimensional incompressible two-phase Navier-Stokes solver. Additionally, we employ a simple constant contact angle approach. We compare the results of these two numerical models with those from laboratory experiments for the micron-scale droplet impact on substrates with a variety of wetting characteristics. With our sophisticated asymptotic interface formation model, the droplet shapes, heights and diameters compare very well with practical experiments.

Item URL in elib:https://elib.dlr.de/124591/
Document Type:Article
Additional Information:Also available as INS preprint INS Preprint No. 1811.
Title:Simulation of micron-scale drop impact
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Klitz, MargritMargrit.Klitz (at) dlr.deUNSPECIFIED
Griebel, MichaelInstitute for Numerical Simulation, University of Bonn & Fraunhofer Institute for Algorithms and Scientific Computing SCAI, Sankt AugustinUNSPECIFIED
Date:2019
Journal or Publication Title:Computers and Mathematics with Applications
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Publisher:Elsevier
ISSN:0898-1221
Status:Submitted
Keywords:micron-scale drop impact, Navier-Stokes, dynamic contact angle, interface formation model, CLSVOF
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):R - Vorhaben SISTEC
Location: Köln-Porz
Institutes and Institutions:Institut of Simulation and Software Technology > High Performance Computing
Deposited By: Klitz, Margrit
Deposited On:07 Dec 2018 13:24
Last Modified:31 Jul 2019 20:22

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