کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
519165 867642 2012 24 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Semi-implicit surface tension formulation with a Lagrangian surface mesh on an Eulerian simulation grid
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
Semi-implicit surface tension formulation with a Lagrangian surface mesh on an Eulerian simulation grid
چکیده انگلیسی

We present a method for applying semi-implicit forces on a Lagrangian mesh to an Eulerian discretization of the Navier Stokes equations in a way that produces a sparse symmetric positive definite system. The resulting method has semi-implicit and fully-coupled viscosity, pressure, and Lagrangian forces. We apply our new framework for forces on a Lagrangian mesh to the case of a surface tension force, which when treated explicitly leads to a tight time step restriction. By applying surface tension as a semi-implicit Lagrangian force, the resulting method benefits from improved stability and the ability to take larger time steps. The resulting discretization is also able to maintain parasitic currents at low levels.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computational Physics - Volume 231, Issue 4, 20 February 2012, Pages 2092–2115
نویسندگان
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