An ALE-based numerical technique for modeling sedimentary basin evolution featuring layer deformations and faults

JOURNAL OF COMPUTATIONAL PHYSICS

卷:230

Article

Longoni, Matteo¹  Malossi, A. Cristiano I.²  Quarteroni, Alfio^1,2  Villa, Andrea³  Ruffo, Paolo⁴ 

[1] Politecn Milan, Dept Math, MOX, I-20133 Milan, Italy

[2] Ecole Polytech Fed Lausanne, CMCS Chair Modelling & Sci Comp, MATHICSE Math Inst Computat Sci & Engn, CH-1015 Lausanne, Switzerland

[3] Univ Milan, Dept Math, I-20133 Milan, Italy

[4] ENI, GEBA Dept, E&P Div, I-20097 San Donato Milanese, Italy

关键词: Computational geology;    Fractures and faults;    Non-Newtonian fluids;    Compaction of granular systems;    Finite element method;    Level set method;   

DOI  :  10.1016/j.jcp.2011.01.027

来源: Elsevier

【 摘 要 】

In this paper we present a numerical tool to simulate dynamics of stratified sedimentary basins, i.e. depressions on the Earth's surface filled by sediments. The basins are usually complicated by crustal deformations and faulting of the sediments. The balance equations, the non-Newtonian rheology of the sediments, and the depth-porosity compaction laws describe here a model of basin evolution. We propose numerical schemes for the basin boundary movement and for the fault tracking. In addition, a time splitting algorithm is employed to reduce the original model into some simpler mathematical problems. The numerical stability and the other features of the developed methodology are shown using simple test cases and some realistic configurations of sedimentary basins. (C) 2011 Elsevier Inc. All rights reserved.

【 授权许可】

Free