Increasing the computational speed of flash calculations with applications for compositional, transient simulations

Claus P. Rasmussen, Kristian Krejbjerg, Michael Locht Michelsen, Kersti E. Bjurstrøm

Research output: Contribution to journalJournal articleResearchpeer-review


Approaches are presented for reducing the computation time spent on flash calculations in compositional, transient simulations. In a conventional flash calculation, the majority of the simulation time is spent on stability analysis, even for systems far into the single-phase region. A criterion has been implemented for deciding when it is justified to bypass the stability analysis. With the implementation of the developed time-saving initiatives, it has been shown for a number of compositional, transient pipeline simulations that a reduction of the computation time spent on flash calculations by approximately 85 to 90% can be achieved.
Original languageEnglish
JournalS P E Reservoir Evaluation and Engineering
Issue number1
Pages (from-to)32-38
Publication statusPublished - 2006

Cite this