We consider the impingement of a droplet onto a wall with high impact speed. To model this process we favour a diffuse-interface concept. Precisely, we suggest a compressible Navier–Stokes–Allen–Cahn model following [5]. Basic properties of the model are discussed. To cope with the fluid-wall interaction, we derive thermodynamically consistent boundary conditions that account for dynamic contact angles. We briefly discuss a discontinuous Galerkin scheme which approximates the energy dissipation of the system exactly and illustrate the results with a series of numerical simulations. Currently, these simulations are restricted to static contact angle boundary conditions.
CITATION STYLE
Ostrowski, L., Massa, F. C., & Rohde, C. (2020). A Phase Field Approach to Compressible Droplet Impingement. In Fluid Mechanics and its Applications (Vol. 121, pp. 113–126). Springer. https://doi.org/10.1007/978-3-030-33338-6_9
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