Session Details

10:30
Modeling porous medium modification through induced calcite precipitation (Keynote)
Johannes Hommel (University of Stuttgart), Adrienne J. Phillips (Montana State University), Robin Gerlach (Montana State University), Alfred B. Cunningham (Montana State University), Rainer Helmig (University of Stuttgart), Holger Class (University of Stuttgart)

Kurzfassung:
Induced calcite precipitation is an emerging technology to alter properties of porous media. It results in a decrease in porosity and permeability as well as an increase in mechanical strength. For a reliable prediction of these changes, numerical modeling is the method of choice, as the involved processes are strongly coupled. Validated to experimental data, such numerical models are useful tools in the upscaling from laboratory to field-scale applications.

11:10
Heat transfer in multi-phase porous media for intelligent cancer detection
Angela Niedermeyer (RWTH Aachen University), Carlos Alberto Hernandez Padilla (RWTH Aachen University), Marcus Stoffel (RWTH Aachen University), Bernd Markert (RWTH Aachen University)

Kurzfassung:
The underlying research project aims to improve cancer diagnosis by determining the correlation between the locally increased heat production of hyper-perfused cancerous tissue and the body surface temperature distribution, measurable using thermography. In this work, a preliminary experimental study of the detectability of an embedded heat source in a perfused solid by means of thermography is presented. Furthermore, the suitability of different mathematical modelling approaches is studied.

11:30
Variation of different growth descriptions in a metastatic proliferation model
Patrick Schröder (University of Stuttgart), Arndt Wagner (University of Stuttgart), Daniela Stöhr (University of Stuttgart), Markus Rehm (University of Stuttgart), Wolfgang Ehlers (University of Stuttgart)

Kurzfassung:
In biological tissue, the proliferation of metastases is governed by nutrient-driven cell division. In a continuum-mechanical model based on the Theory of Porous Media, the proliferation is described via mass production terms. Therein, the constitutive approach for the growth of the metastases is implemented either by a Monod-type or a logistic growth function. In both cases, the results are compared to cancer cell growth experiments.

11:50
The TPM$^2$-Method: A two-scale homogenization scheme for fluid saturated porous media
Florian Bartel (TU Dortmund University), Tim Ricken (TU Dortmund University), Jörg Schröder (University of Duisburg-Essen), Joachim Bluhm (University of Duisburg-Essen)

Kurzfassung:
This contribution will present a two-scale homogenization (FE$^2$-Method) approach for fluid saturated porous media with a reduced two-phase material model (TPM), which covers the behaviour of large poro-elastic deformation. The main aspects of theoretical derivation for the weak form, the lower level boundary conditions under consideration of the Hill-Mandel homogeneity condition and the averaged macroscopic tangent moduli will be pointed out and a numerical example will be shown.

12:10
Using a pore-network model to couple mass, momentum and energy at the interface between free flow and porous media flow
Kilian Weishaupt (University of Stuttgart), Rainer Helmig (University of Stuttgart)

Kurzfassung:
Coupled systems of a porous medium with an adjacent free flow appear in a wide range of industrial and environmental processes. We propose an efficient coupled model comprising three domains: a bulk porous medium (Darcy's or Forchheimer's law) at the bottom, the free flow domain (Navier-Stokes) on the top and the interface region (dynamic pore-network model) in between. This model can help to provide effective upscaled parameters required for other mechanical modeling approaches.