دانلود مقاله ISI انگلیسی شماره 107228
ترجمه فارسی عنوان مقاله

حجم عصبی کنترل حجم عناصر محدود برای جریان چند فاز در رسانه متخلخل ناهمگن

عنوان انگلیسی
A discontinuous control volume finite element method for multi-phase flow in heterogeneous porous media
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی
107228 2018 13 صفحه PDF
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Journal of Computational Physics, Volume 352, 1 January 2018, Pages 602-614

پیش نمایش مقاله
پیش نمایش مقاله  حجم عصبی کنترل حجم عناصر محدود برای جریان چند فاز در رسانه متخلخل ناهمگن

چکیده انگلیسی

We present a new, high-order, control-volume-finite-element (CVFE) method for multiphase porous media flow with discontinuous 1st-order representation for pressure and discontinuous 2nd-order representation for velocity. The method has been implemented using unstructured tetrahedral meshes to discretize space. The method locally and globally conserves mass. However, unlike conventional CVFE formulations, the method presented here does not require the use of control volumes (CVs) that span the boundaries between domains with differing material properties. We demonstrate that the approach accurately preserves discontinuous saturation changes caused by permeability variations across such boundaries, allowing efficient simulation of flow in highly heterogeneous models. Moreover, accurate solutions are obtained at significantly lower computational cost than using conventional CVFE methods. We resolve a long-standing problem associated with the use of classical CVFE methods to model flow in highly heterogeneous porous media.