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

被引:65
作者
Rasmussen, CP
Krejbjerg, K
Michelsen, ML
Bjurstrom, KE
机构
[1] Calsep Inc, Houston, TX USA
[2] Tech Univ Denmark, Dept Chem Engn, Lyngby, Denmark
[3] Scandpower Petr Technol AS, Kjeller, Norway
关键词
D O I
10.2118/84181-PA
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
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.
引用
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页码:32 / 38
页数:7
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