• A fracture-propagation-control model for pipelines transporting CO2-rich mixtures including a new method for material-model calibration 

      Nordhagen, Håkon Ottar; Munkejord, Svend Tollak; Hammer, Morten; Gruben, Gaute; Fourmeau, Marion; Dumoulin, Stephane (Journal article; Peer reviewed, 2017)
      This work considers a predictive numerical modelling approach for fracture-propagation control in CO2-transport pipelines, an area where current engineering tools do not work. Fluid-structure interaction model simulations ...
    • Calibration of Pipeline Steel Model for Computational Running Ductile Fracture Assessment 

      Gruben, Gaute; Dumoulin, Stephane; Nordhagen, Håkon Ottar; Hammer, Morten; Munkejord, Svend Tollak (ISOPE - International Offshore and Polar Engineering Conference. Proceedings;29, Chapter; Peer reviewed, 2019)
      A novel fracture calibration method is presented for material models applied in finite element analysis of pipeline steels exposed to running ductile fracture. The calibration is based on the drop-weight tear test which ...
    • CO2 Pipeline Integrity: Comparison of a Coupled Fluid-structure Model and Uncoupled Two-curve Methods 

      Aursand, Eskil; Dørum, Cato; Hammer, Morten; Morin, Alexandre; Munkejord, Svend Tollak; Nordhagen, Håkon Ottar (Peer reviewed; Journal article, 2014)
      One challenge in CCS is related to the prevention of running-ductile fracture in CO2-carrying pipelines. Commonly used tools for ensuring crack arrest in pipelines hinge mainly on semi-empirical models, which may not be ...
    • Fracture propagation control in CO2 pipelines: Validation of a coupled fluid-structure model 

      Aursand, Eskil; Dumoulin, Stephane; Hammer, Morten; Lange, Hans Iver; Morin, Alexandre; Munkejord, Svend Tollak; Nordhagen, Håkon Ottar (Journal article; Peer reviewed, 2016)
      Existing engineering methods to ensure fracture propagation control in natural-gas transmission pipelines have been shown to be non-applicable when dense-phase CO2 is transported. To overcome this, a coupled fluid-structure ...
    • Simulation of a Full-Scale CO2 Fracture Propagation Test 

      Gruben, Gaute; Dumoulin, Stephane; Nordhagen, Håkon Ottar; Hammer, Morten; Munkejord, Svend Tollak (Chapter; Peer reviewed, 2018)
      In this study, we present results from a numerical model of a full-scale fracture propagation test where the pipe sections are filled with impure, dense liquid-phase carbon dioxide. All the pipe sections had a 24″ outer ...