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Calculation of equilibrium composition in combustion products
Author(s) -
Rashidi Manoochehr
Publication year - 1997
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.270200809
Subject(s) - combustion , algebraic equation , substitution (logic) , work (physics) , convergence (economics) , composition (language) , set (abstract data type) , algebraic number , mathematics , computer program , value (mathematics) , computer science , thermodynamics , nonlinear system , chemistry , mathematical analysis , physics , linguistics , philosophy , quantum mechanics , economics , programming language , economic growth , operating system , machine learning
For a specific combustion problem involving calculations of several species at equilibrium, it is much simpler to write a special computer program and calculate the concentrations, rather than to use a generalized computer program. To calculate these concentrations, one must solve a set of non‐linear algebraic equations. This work describes a procedure in which the Newton‐Raphson method and the successive substitution method are combined. It is was found that for these types of problems the value of unknowns and the nature of the equations are such that by adopting the two procedures simultaneously a much faster and reliable convergence is achieved. This study also shows what possible species should be considered for these calculations.