Fra energilagring i undergrunns-system til flytprosesser i hjernen: porøse medier er (nesten) overalt
Prosesser knyttet til porøse media er svært relevante for bruk i miljømessige, tekniske og biologiske systemer. Professor Rainer Helmig presenterer og diskuterer relevante slike modell-konsepter i denne Horisont-forelesningen.
The lecture (held in English):
Multi-field processes in porous media are highly relevant for numerous applications in environmental, technical and biological systems. Climate models, fuel cells, cooling systems, energy storage in the natural underground, tumor growth, medication transport in human cells or vertebroplasty - these are just a few examples of such systems.
The greatest challenges for porous-media research arise from the fact that the overall effective behaviour of porous-media systems depends strongly on interfaces that occur on very small spatial scales, although the overall system of interest is often too large to consider the interfaces explicitly in detail.
The aim of this talk is to present and discuss relevant model concepts for flow and transport processes for environmental, technical and biological systems, showing – with selected examples from the brain to energy storage – similarities between these various concepts.
The lecture starts at 16.15, 30.04.2019, in "Egget" auditorium in The Student Centre (Parkveien 1). Everybody is welcome! Refreshments will be served from 15.45.
Rainer Helmig has recently accepted a 3-year position as the Magne Espedal Professor II at the University of Bergen, funded by DEA-Norge. This lecture is therefore also a special celebration of the legacy of Magne Espedal.
Professor Rainer Helmig:
The hydrologist Prof. Rainer Helmig was born in Hamm in 1957, studied civil engineering at the University of Hanover and completed his PhD there in 1993 on the “Theory and Numerics of Multiphase Flows in Fissured, Porous Media”. He was promoted to professor at the University of Stuttgart in 1996 on the subject of “Coupled Underground Flow and Transport Processes - A Contribution to Hydrosystem Modeling”. Between 1997 and 2000, Helmig worked as a Professor for Numerical Methods and Information Processing, and as the Director of the Computing Applications Institute in Civil Engineering at the Technical University Braunschweig. Since 2000, he has been Professor of Hydromechanics and Hydrosystem Modeling at the University of Stuttgart.
Helmig’s research area of multiphase flow physics deals with the numeric modeling of flow and transport processes, which play an important role in environmental issues as well as in technical and biological systems. Examples include: underground energy storage, the links between the water cycle and the atmosphere, modeling and optimization of the water budget in fuel cells as well as modeling of medication transport in brain and lungs.
Moreover, Prof. Helmig investigates the frequently discussed topic of “fracking”, an extraction method for oil and gas which involves pumping liquid into deep boreholes to increase the porosity of the rock bed.