Now showing items 1-6 of 6

    • Auxiliary variables for 3D multiscale simulations in heterogeneous porous media 

      Sandvin, Andreas; Keilegavlen, Eirik; Nordbotten, Jan Martin (Elsevier, 2013-04-01)
      The multiscale control-volume methods for solving problems involving flow in porous media have gained much interest during the last decade. Recasting these methods in an algebraic framework allows one to consider them ...
      Journal article
    • Multiscale mass conservative domain decomposition preconditioners for elliptic problems on irregular grids 

      Sandvin, Andreas; Nordbotten, Jan Martin; Aavatsmark, Ivar (Springer, 2011-06)
      Multiscale methods can in many cases be viewed as special types of domain decomposition preconditioners. The localisation approximations introduced within the multiscale framework are dependent upon both the heterogeneity ...
      Journal articlePeer reviewed
    • Solute transport in aquifers with evolving scale heterogeneity 

      Suciu, Nicolae; Attinger, Sabine; Radu, Adrian Florin; Vamo̧s, Cǎlin; Vanderborght, Jan; Vereecken, Harry; Knabner, Peter (Tipografia Universitatii Ovidius, 2015)
      Transport processes in groundwater systems with spatially heterogeneous properties often exhibit anomalous behavior. Using first-order approximations in velocity fluctuations we show that anomalous superdiffusive behavior ...
      Journal article
    • Transport Upscaling in Porous Media 

      Nedreli, Anette Cathrine (The University of Bergen, 2014-06-02)
      Numerical models are important for modeling what happens in porous media. In this thesis we will simulate the heat transport in geothermal reservoirs. Because these reservoirs are usually quite large, we will make a model ...
      Master thesis
    • A unified multilevel framework of upscaling and domain decomposition 

      Sandvin, Andreas; Nordbotten, Jan Martin; Aavatsmark, Ivar (International Center for Numerical Methods in Engineering (CIMNE), 2010)
      We consider multiscale preconditioners for a class of mass-conservative domain-decomposition (MCDD) methods. For the application of reservoir simulation, we need to solve large linear systems, arising from finite-volume ...
      Conference object
    • Upscaling on Fracture Flow Models 

      Dugstad, Martin Sandanger (The University of Bergen, 2017-08-25)
      Fractures have a great impact on the quality of a porous media. The understanding of the fractures is important to describe the challenges linked to flow of geothermal heat, the transport of groundwater or transport of ...
      Master thesis