Computer Model Simulation of Two-Phase Flow Instability in a Full-Scale Pipeline-Riser System

摘要

The onset of two-phase flow instability (severe slugging) in an existing full-scale pipeline-riser system, for which observations of severe slugging exist, has been simulated by the computer models MULTWO and LICTWOP. The models contain submodels for most relevant flow patterns (e.g. horizontal/inclined stratified flow and vertical slug flow), by which a fine agreement with the measured steady state data can be obtained. No ad-hoc models for severe slugging were added. Both the numerical simulations with the computer models and separate analytical studies stress the importance of a proper numerical representation of wave propagation phenomena for a reliable prediction of severe slugging. 10 refs. (ERA citation 13:037352)