My research focuses on how the atmosphere, in particular wind forcing, can affect the thermohaline circulation in the North Atlantic. The thermohaline circulation contributes in bringing warm, saline waters northwards and is driven by density differences in the ocean: Warm waters are less dense, but is cooled when transported far north, hence becoming denser. Denser waters sink and flow southwards in the deep ocean. On a monthly/yearly basis large variations in the intensity of this circulation can be seen, also in the deep ocean. Parts of these variations can be caused by the wind, and I aim to find out how. For more info, see here. I am a part of the NFR-project NORTH.
I previously worked with heat transport in the ground, motivated by production of geothermal energy. My focus was on how density currents in the groundwater can affect the heat production. As one creates a temperature difference in the ground by taking up heat energy, this will create density differences in the groundwater, which then can initiate a density driven current: colder groundwater is heavier and flow downwards, while warmer groundwater is less dense and flow upwards. TU wrote an article about this (in Norwegian). I have also looked at how geochemical reactions caused by the temperature change in the subsurface can affect the heat reservoir, and developed better models to describe these changes.
- MAT212 Functions of several variables (Fall 2011, Fall 2016)
- MAT213 Functions of a complex variable (Spring 2013, Spring 2014)
- 2017. Effective Behavior Near Clogging in Upscaled Equations for Non-isothermal Reactive Porous Media Flow. Transport in Porous Media. 120: 553-577. doi: 10.1007/s11242-017-0940-y
- 2016. Upscaling of Nonisothermal Reactive Porous Media Flow under Dominant Péclet Number: The Effect of Changing Porosity. Multiscale Modeling & simulation. 14: 502-533. doi: 10.1137/15M1022781
- 2015. A model for non-isothermal flow and mineral precipitation and dissolution in a thin strip. Journal of Computational and Applied Mathematics. 289: 346-355. doi: 10.1016/j.cam.2014.12.009
- 2015. Upscaling of non-isothermal reactive porous media flow with changing porosity. Transport in Porous Media. 114: 371-393. doi: 10.1007/s11242-015-0530-9
- 2014. Pore scale model for non-isothermal flow and mineral precipitation and dissolution in a thin strip. Journal of Computational and Applied Mathematics. 14 pages. doi: 10.1016/j.cam.2014.12.009
- 2013. Influence of natural convection in a porous medium when producing from borehole heat exchangers. Water resources research. 49: 4927-4938. doi: 10.1002/wrcr.20388
- 2011. Linear and nonlinear convection in porous media between coaxial cylinders. Physics of fluids. 23. 11 pages. doi: 10.1063/1.3637642
- 2015. Modeling of heat transfer in porous media in the context of geothermal energy extraction. University of Bergen.
- 2011. Linear and nonlinear convection in porous media between coaxial sylinders. Universitetet i Bergen. 87 pages.
- 2014. An Approach for Investigation of Geochemical Rock-Fluid Interactions. KAPITTEL. In:
- 2014. 39th Workshop on Geothermal Reservoir Engineering 2014. 1429 pages. ISBN: 9781632663856.
- 2013. Influence of convection on production from borehole heat exchangers. Modeling. In:
- 2013. Proceedings of the 38th Workshop on Geothermal Reservoir Engineering 2013. 1741 pages. ISBN: 9781627485708.