Open AccessStudy of stiff differential equations of mathematical description of izomerization of pentane-hexane cut process
Author(s) -
Р. И. Фасхутдинова,
А. Г. Фасхутдинов,
L. V. Enikeeva,
I. M. Gubaydullin
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2131/2/022003
Subject(s) - pentane , isomerization , differential equation , hexane , stiff equation , fraction (chemistry) , process (computing) , differential (mechanical device) , stiffness , mathematics , work (physics) , matlab , computer science , chemistry , mathematical analysis , thermodynamics , catalysis , physics , organic chemistry , operating system
This paper provides a brief overview of the existing definitions of a stiff system of differential equations. Further, on the example of the accepted scheme of chemical transformations of the catalytic isomerization process of the pentane-hexane fraction, the stiffness of the system of differential equations was studied. In the course of the work, a method for studying the direct kinetic problem for stiffness is presented. In the Matlab software, the results of solving a system of differential equations by five methods (solvers) were compared. The given method can be tried for solving other problems of chemical kinetics.