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.
|Journal||S P E Reservoir Evaluation and Engineering|
|Publication status||Published - 2006|
Rasmussen, C. P., Krejbjerg, K., Michelsen, M. L., & Bjurstrøm, K. E. (2006). Increasing the computational speed of flash calculations with applications for compositional, transient simulations. S P E Reservoir Evaluation and Engineering, 9(1), 32-38.