کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
520831 867737 2007 26 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A Darcy law for the drift velocity in a two-phase flow model
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
A Darcy law for the drift velocity in a two-phase flow model
چکیده انگلیسی

This work deals with the design and numerical approximation of an Eulerian mixture model for the simulation of two-phase dispersed flows. In contrast to the more classical two-fluid or Drift-flux models, the influence of the velocity disequilibrium is taken into account through dissipative second-order terms characterized by a Darcy law for the relative velocity. As a result, the convective part of the model is always unconditionally hyperbolic. We show that this model corresponds to the first-order equilibrium approximation of classical two-fluid models. A finite volume approximation of this system taking advantage of the hyperbolic nature of the convective part of the model and of the particular structural form of the dissipative part is proposed. Numerical applications are presented to assess the capabilities of the model.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computational Physics - Volume 224, Issue 1, 20 May 2007, Pages 288–313
نویسندگان
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