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Simulation of Droplet Impact with Dynamic Contact Angle Boundary Conditions

In: Singular Phenomena and Scaling in Mathematical Models

Author

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  • Michael Griebel

    (Rheinische Friedrich-Wilhelms-Universität Bonn, Institut für Numerische Simulation)

  • Margrit Klitz

    (Rheinische Friedrich-Wilhelms-Universität Bonn, Institut für Numerische Simulation)

Abstract

The numerical simulation of dynamic wetting processes 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. In this article, we simulate droplet impact on a dry flat surface by using two different contact angle models. Both models show good qualitative and quantitative agreement with experimental results. For our numerical method, we solve the three-dimensional Navier-Stokes equations with finite differences on a staggered grid. The free surface is captured by a level-set method, and the contact angle determines the shape of the level-set function at the boundary. Additionally, we investigate the mass-conservation properties of two volume-correction methods, which are invaluable for the analysis of the droplet behavior.

Suggested Citation

  • Michael Griebel & Margrit Klitz, 2014. "Simulation of Droplet Impact with Dynamic Contact Angle Boundary Conditions," Springer Books, in: Michael Griebel (ed.), Singular Phenomena and Scaling in Mathematical Models, edition 127, pages 297-325, Springer.
    • Handle: RePEc:spr:sprchp:978-3-319-00786-1_13
    DOI: 10.1007/978-3-319-00786-1_13
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