Modeling and analysis of the movement of fluid-fluid interfaces in porous media coupled with turbulent free flow
In order to solve many environmental and technical problems, flow in porous media must be coupled with free flow. One example is the simulation of evaporation processes in arid regions. The physical processes behave very differently in space and time. In free flow, we expect turbulent behavior which includes small-scale effect with high velocities. In the porous medium, on the other hand, we have to model the much slower flow processes.
In the framework of this project, strategies are to be developed for gradually decoupling the two different compartments in space and time. One idea is to couple the spatial discretizations by means of a mortar approach in order to allow grids with different resolution at the interface. The approximation in time is to decoupled with the aid of an adaptive time discretization scheme. One important goal is to increase the efficiency and robustness of the simulation by using a new sequential coupling approach.
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