2024/05/17 by Ivan Buntic, Martin Schneider, Buntic, Ivan +5 · 1 citation
Computer Science · Engineering · #76-10 (Primary) 76-04 (Secondary) #Advanced Mathematical Modeling in Engineering #Enhanced Oil Recovery Techniques #FOS: Physical sciences #Fluid Dynamics (physics.flu-dyn) #Lattice Boltzmann Simulation Studies
paper · pdf · doi:10.48550/arxiv.2405.18285
openalex publication_date 2024/05/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
Vertical equilibrium models have proven to be well suited for simulating fluid flow in subsurface porous media such as saline aquifers with caprocks. However, in most cases the dimensionally reduced model lacks the accuracy to capture the dynamics of a system. While conventional full-dimensional models have the ability to represent dynamics, they come at the cost of high computational effort. We aim to combine the efficiency of the vertical equilibrium model and the accuracy of the full-dimensional model by coupling the two models adaptively in a unified framework and solving the emerging system of equations in a monolithic, fully-implicit approach. The model domains are coupled via mass-conserving fluxes while the model adaptivity is ruled by adaption criteria. Overall, the adaptive model shows an excellent behaviour both in terms of accuracy as well as efficiency, especially for elongated geometries of storage systems with large aspect ratios.