carrier image

Conformal Hexahedral Mesh Coarsening by Agglomeration

Cargemel, Pierre, Youssef Mesri, Herve Guillard

23rd International Meshing Roundtable, Elsevier Ltd., pp.Research Note, October 12-15 2014

IMR
PROCEEDINGS

23rd International Meshing Roundtable
London, UK
October 12-15,2014

IFPEN, France
INRIA, France
Email: pierre.cargemel@ifpen.fr, youssef.mesri@ifpen.fr, herve.guillard@inria.fr

Abstract
Reservoir simulation involves to compute dynamic flow of different phases in a porous medium. The initial state of the reservoir is usually precomputed via geo-statistics methods, extrapolating measures of the terrain. so, the input of reservoir simulation is given as a fine mesh containing heterogeneous data. However, due to the complexity of the system of partial differential equations (PDE) governing the flow dynamic, the use of this fine mesh is impracticable. Nowadays, industrial software uses upscaled model [1] a coarse mesh is generated homogenizing fine properties from the fine mesh.

In this paper, we will describe an agglomeration strategy, to dynamically coarsen the fine mesh without loss of the fine properties. The adaptivity may be driven by physics and/or geometric estimators. Ideally, the coars- ening should be applied locally in low gradient regions, whereas high gradient regions keep the fine mesh.

Download Full Paper (PDF Format)


Contact author(s) or publisher for availability and copyright information on above referenced article