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The impact of various flow rates along with different orifice geometries and wetting conditions is evaluated. The complete numerical model is implemented and investigated using a Smoothed Particle Hydrodynamics (SPH) approach.Īn application is shown with respect to the initial bubble formation process at an orifice. As a result the model shows equilibrium contact angles for systems at rest and moreover it reveals dynamic contact angles for moving interfaces.
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Thus the Navier–Stokes equations are extended and now capable of describing interface and contact line dynamics. In this thesis a new approach based on a balance equation for the contact line is introduced, which completes the model of a two-phase system close to a solid boundary. In this way appropriate physical models must be developed in order to describe surface tension phenomena on the continuum scale. Intermolecular interactions like the Van der Waals forces may act as driving force and give rise to interface and contact line dynamics.
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The scientific description of wetting phenomena is a challenging problem on every considerable length-scale. Modeling the Dynamics of Partial Wetting Using Smoothed Particle Hydrodynamics (SPH)
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