Depressurization of carbon dioxide in pipelines- Models and methods
Journal article, Peer reviewed
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Original versionEnergy Procedia. 2011, 4 2984-2991. 10.1016/j.egypro.2011.02.208
A model for two-phase carbon dioxide transport with phase transfer in pipelines is presented. The stiffened-gas equation of state is used for calculating thermodynamical properties. The convergence and accuracy of two numerical methods - a centred multistage (MUSTA) scheme and an upwind Roe scheme - are compared. Results for the depressurization of a pipe, causing phase change and cooling, are presented, showing the importance of an accurate numerical method. The effect of a discontinuous sound velocity on the depressurization is discussed.