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On the predictive capabilities of a multiphase SPH model for hydrodynamic spreading dynamics |
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| Authors: | Rakulan Sivanesapillai Holger Steeb |
| Institution: | 1. Institute of Applied Mechanics (CE), University of Stuttgart, Pfaffenwaldring 7, 70569 Stuttgart / Germany;2. Institute of Applied Mechanics (CE), University of Stuttgart, Pfaffenwaldring 7, 70569 Stuttgart / Germany
Stuttgart Research Centre for Simulation Technology (SRC Simtech), Pfaffenwaldring 5a, 70569 Stuttgart / Germany |
| Abstract: | We assess the predictive capabilities of a multiphase Smoothed-Particle Hydrodynamics (SPH) model to simulate two-phase flow processes that are decisively governed by the dynamics of hydrodynamically moving contact lines. The spreading of a liquid droplet on a completely wettable, smooth and flat substrate serves as prototype validation problem. Our simulation results reproduce the main features of hydrodynamic spreading in the quasi-static limit, i. e. when the balance of viscous and capillary forces near the contact line governs the dynamics. The exponential spreading rate is consistent with Tanner's law. (© 2016 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim) |
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