Panayiotis Yiannis Vrionis, Andreas D. Demou, George Karapetsas, Demetrios T. Papageorgiou, Nikos Savva
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引用次数: 0
Abstract
We present an open-source, modular and highly scalable thin-film flow solver that can perform complex simulations of wetting and dewetting phenomena in the presence of substrate or environmental heterogeneities. The implementation is based on the thin-film approximation and circumvents the stress singularity at moving contact lines by assuming the presence of an ultra thin precursor film covering the whole surface. The solver is implemented within the open-source Basilisk library (http://basilisk.fr/), and is validated by comparing with the predictions of reduced-order models derived from matched asymptotics analyses for a number of representative cases with isolated droplets. The capabilities of the solver are demonstrated by simulating multiple interacting droplets sliding on an inclined and chemically heterogeneous substrate.
期刊介绍：
Theoretical and Computational Fluid Dynamics provides a forum for the cross fertilization of ideas, tools and techniques across all disciplines in which fluid flow plays a role. The focus is on aspects of fluid dynamics where theory and computation are used to provide insights and data upon which solid physical understanding is revealed. We seek research papers, invited review articles, brief communications, letters and comments addressing flow phenomena of relevance to aeronautical, geophysical, environmental, material, mechanical and life sciences. Papers of a purely algorithmic, experimental or engineering application nature, and papers without significant new physical insights, are outside the scope of this journal. For computational work, authors are responsible for ensuring that any artifacts of discretization and/or implementation are sufficiently controlled such that the numerical results unambiguously support the conclusions drawn. Where appropriate, and to the extent possible, such papers should either include or reference supporting documentation in the form of verification and validation studies.
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