Two-Phase Flow of CO2 with Phase Transfer

A model for two-phase pipeline flow of CO2 with phase transfer is presented. Two different relaxation models for phase transfer are developed. The system of equations is solved by splitting it into a hyperbolic conservation law and a relaxation ODE, solved by a multi-stage (MUSTA) finite volume scheme...

Full description

Saved in:
Bibliographic Details
Published in:Energy procedia 2012, Vol.23, p.246-255
Main Authors: Lund, Halvor, Aursand, Peder
Format: Article
Language:English
Subjects:
condensation
Evaporation
phase transfer
pipeline
two-phase
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A model for two-phase pipeline flow of CO2 with phase transfer is presented. Two different relaxation models for phase transfer are developed. The system of equations is solved by splitting it into a hyperbolic conservation law and a relaxation ODE, solved by a multi-stage (MUSTA) finite volume scheme and the backward Euler method, respectively. The stiffened-gas equation of state is used for calculating thermodynamic properties. Simulation results from a depressurisation case of a CO2 pipe, causing phase change and cooling, are presented, showing that statistical rate theory predicts solutions close to those of an equilibrium model with instant phase transfer.
ISSN:1876-6102
1876-6102
DOI:10.1016/j.egypro.2012.06.034