Tzold

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Tzold
PhD student
Office:202
Phone:+49 711 685-67652
Fax:+49 711 685-63658
Email:Thomas.Zauner _at_ icp.uni-stuttgart.de
Address:Tzold
Institute for Computational Physics
Universität Stuttgart
Allmandring 3
70569 Stuttgart
Germany


Research

Reconstruction of natural multicale porous media

A continuum model is developed for generating synthetic microcomputer-tomography data of multiscale porous media at arbitrary resolution.



Transport in porous media

Understanding fluid transport in natural porous media is important for many industrial and scientific applications. Computer simulations require accurate three-dimensional microscopic structure data as input and efficient numerical algorithms for fluid flow simulations. Natural porous media such as carbonates and clay filled sandstones exhibit heterogeneities on many scales and cannot be modeled by existing modeling techniques.



LB simulation of flow (top to bottom) in a discretized porous media model (sandstone). In blue the volume with V>0. Brow isosurfaces visualize regions with a high velocity.

Lattice Boltzmann Method

Large scale parallelized lattice-Boltzmann simulations are performed to calculate transport parameters, such as permeabilities using Darcy's Law, and other material parameters. The Lattice Boltzmann (LB) method numerically solves the discretized Boltzmann equation using a linearized collision operator to simulate the flow of a Newtonian fluid. We use the D3Q19 lattice model together with a single relaxation time (BGK) or two relaxation time (MRT/TRT) collision operator. Extensive calibrations for our LB-implementations were performed by simulating Poiseuille Flow in pipes of varying shapes and sizes.





Publications