People

  • Asger J.S. Bolet (PhD student)
  • Amalie Christensen (PhD student)
  • Anier Hernandez (PhD student)
  • Gaute Linga (PhD student)
  • Rastin Matin (PhD student))
  • Marek Misztal (Postdoc)
  • Anders Møllgaard (PhD student)
  • Jens M. Tarp (PhD student)

Research projects

Earth Patterns

VILLUM FOUNDATION Young Investigator Grant.
The interaction between fluids and solids is responsible for a host of remarkable patterns and surface shapes on Earth. Even though the interaction occurs on different scales in space and time and involves a wide variety of materials, it can be addressed in a unified framework by using basic physical principles. We study material deformation and fracture by numerical and theoretical modeling.

P3 - predicting petrophysical parameters

The Danish National Advanced Technology Foundation and Maersk Oil.

The Lattice Boltzmann (LB) scheme has become a powerful tool for simulating complex flows in two- and three-dimensional systems. In the standard LB scheme, based on uniform and regular grids, the discretization of the computational domain and the discretization of particle velocities are coupled since the spatial grid is aligned with the characteristic directions of the velocity set. Such a coupled discretization poses a severe limitation when aiming at simulating flows in complex geometries, which are encountered in several engineering problems. Here we develop LB schemes for solving fluid flow on unstructured grids in complex geometries.


Social Fabric: Dynamical Social Networks

UCPH Excellence Programme for Interdisciplinary Research 2016
The availability of big data has spurred a growing interest in understanding the mechanisms behind evolutionary dynamics of behaviours and the emergence of social structures in social organizations. With more fine-grained information available, it is an increasing challenge from a basic science point of view to extract the signal in the data and, at a deeper level, to understand the dynamics creating both the signal (i.e. significant network effects) and the noise (i.e. random patterns). We aim, from a statistical mechanics point of view, to establish a theoretical framework for analysing evolving social networks and analysing intermittent interactions between individuals. More information here.


Flow in transforming porous media (FlowTrans)

The research themes of FLOWTRANS relate to the characterization and the understanding of fluid flow and chemical reaction within rocks and granular media. This has become an ever-increasing problem in Earth Sciences, Physics, and in many industrial applications, including CO2 sequestration, hydrocarbon migration, ore deposit development, and radioactive waste disposal. One of the main problems is the understanding of flows in transforming porous media, where the rocks and fluid pathways evolve spatially and temporally, for example due to chemical interactions with the flow, or due to compaction of the solid matrix. The dynamic feedbacks between flow, destruction of permeability due to compaction or local precipitation, and creation of permeability due to dissolution, chemical reaction or fracturing, makes understanding of such complex systems a challenge. More information here.

NanoHeal

Horizon 2020 ITN
The application of stress to multiphase solid-liquid systems often results in morphological instability. For example, a surface of a stressed solid in contact with its solution corrugates and develops parallel grooves. The instability is triggered by deformation mechanisms operating across multiple scales and it is thermodynamically controlled by spatial gradients in the chemical potential. On large scales, chemical compaction is a common deformation mechanism (e.g. in sedimentary rocks) by material dissolution in regions of high stress, diffusion transport of mass through a fluid-saturated pore space and precipitation in regions of low stress. On the grain and sub-grain scales, the material microstructure is a major determinant for the modes of deformation. Recrystallization by the nucleation and mobility of dislocations or by grain boundary migration is an important deformation mode. Extended models with a focus on recrystallization processes that lead to deformation and creep using density functional theory and phase field models are developed.