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Abstract

Summary

We present a spatiotemporal adaptive multiscale algorithm, which is based on the Multiscale Finite Volume method. The algorithm offers a very efficient framework to deal with multiphysics problems and to couple regions with different spatial resolution. We employ the method to simulate two-phase flow through porous media. At the fine scale, we consider a pore-scale description of the flow based on the Volume Of Fluid method. In order to construct a global problem that describes the coarse-scale behavior, the equations are averaged numerically with respect to auxiliary control volumes, and a Darcy-like coarse-scale model is obtained. The space adaptivity is based on the idea that a fine-scale description is only required in the front region, whereas the resolution can be coarsened elsewhere. Temporal adaptivity relies on the fact that the fine-scale and the coarse-scale problems can be solved with different temporal resolution (longer time steps can be used at the coarse scale). By simulating drainage under unstable flow conditions, we show that the method is able to capture the coarse-scale behavior outside the front region and to reproduce complex fluid patterns in the front region.

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/content/papers/10.3997/2214-4609.20141845
2014-09-08
2024-04-20

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Spatiotemporal Adaptive Multiscale Multiphysics Simulations of Two-phase Flow
Conference Proceedings 2014, 1 (2014); https://doi.org/10.3997/2214-4609.20141845
/content/papers/10.3997/2214-4609.20141845
/content/papers/10.3997/2214-4609.20141845
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