Blar i Faculty of Mathematics and Natural Sciences på forfatter "Aavatsmark, Ivar"

Viser treff 1-8 av 8

    • Assessment of CO2 storage capacity based on sparse data: Skade Formation 

      Elenius, Maria; Skurtveit, Elin; Yarushina, Viktoriya M.; Baig, Irfan; Sundal, Anja; Wangen, Magnus; Landschulze, Karin; Kaufmann, Roland; Choi, Jung Chan; Hellevang, Helge; Podladchikov, Yuri; Aavatsmark, Ivar; Gasda, Sarah (Peer reviewed; Journal article, 2018-12)
      Large North Sea aquifers of high quality are the likely major target for 12 Gt of European CO2 emissions that should be stored in the subsurface by 2050. This involves an upscaling of the present combined injection rate ...

    • International Conference on Greenhouse Gas Technologies (GHGT-12) Models for CO2 injection with coupled thermal proce 

      Kometa, Bawfeh Kingsley; Gasda, Sarah Eileen; Aavatsmark, Ivar (Peer reviewed; Journal article, 2014)
      Large-scale models of carbon dioxide (CO2) storage in geological formations must capture the relevant physical, chemical and thermodynamic processes that affect the migration and ultimate fate of injected CO2. These processes ...

    • Models for CO2 injection with coupled thermal processes 

      Kometa, Bawfeh Kingsley; Gasda, Sarah Eileen; Aavatsmark, Ivar (Peer reviewed; Journal article, 2014)
      Large-scale models of carbon dioxide (CO2) storage in geological formations must capture the relevant physical, chemical and thermodynamic processes that affect the migration and ultimate fate of injected CO2. These processes ...

    • Multiscale mass conservative domain decomposition preconditioners for elliptic problems on irregular grids 

      Sandvin, Andreas; Nordbotten, Jan Martin; Aavatsmark, Ivar (Peer reviewed; Journal article, 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 ...

    • PVTx Properties of a Two-phase CO2 Jet from Ruptured Pipeline 

      Botnen, Helle Augdal; Omar, Abdirahman; Aavatsmark, Ivar; Alendal, Guttorm; Johannessen, Truls (Peer reviewed; Journal article, 2013)
      Span and Wagner equation of state (SW EOS) have been used to investigate changes in the thermodynamic properties of CO2 during a depressurization process from a pipeline into marine environment. The process is assumed to ...

    • SUCCESS: SUbsurface CO2 storage–Critical elements and superior strategy 

      Aker, Eyvind; Bjørnarå, Tore Ingvald; Braathen, Alvar; Brandvoll, Øyvind; Dahle, Helge K.; Nordbotten, Jan Martin; Aagaard, Per; Hellevang, Helge; Alemu, Binyam Lema; Pham, Van Thi Hai; Johansen, Harald; Wangen, Magnus; Nøttvedt, Arvid; Aavatsmark, Ivar; Johannessen, Truls; Durand, Dominique (Peer reviewed; Journal article, 2011)
      SUCCESS is a Center for Environmental Energy Research in Norway and performs research related to geological storage of CO2 in the subsurface. The SUCCESS centre is established by the Research Council of Norway together ...

    • A unified multilevel framework of upscaling and domain decomposition 

      Sandvin, Andreas; Nordbotten, Jan Martin; Aavatsmark, Ivar (Conference lecture, 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 ...

    • Upscaled modeling of CO2 injection and migration with coupled thermal processes 

      Gasda, Sarah Eileen; Stephansen, Annette; Aavatsmark, Ivar; Dahle, Helge K. (Peer reviewed; Journal article, 2013)
      A practical modeling approach for CO2 storage over relatively large length and time scales is the vertical-equilibrium model, which solves partially integrated conservation equations for flow in two lateral dimensions. We ...