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Numerical simulation of a pressure swing air separation systemndasha comparative study of finite difference and collocation methods
Author(s) -
Raghavan N. S.,
Hassan M. M.,
Ruthven D. M.
Publication year - 1987
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450650324
Subject(s) - collocation (remote sensing) , finite difference method , orthogonal collocation , finite difference , collocation method , separation (statistics) , mathematics , pressure swing adsorption , finite difference coefficient , significant difference , computer simulation , sieve (category theory) , partial differential equation , point (geometry) , differential equation , mathematical analysis , computer science , finite element method , adsorption , physics , chemistry , ordinary differential equation , thermodynamics , geometry , mixed finite element method , statistics , organic chemistry , combinatorics , machine learning
The efficiency of three different numerical methods (single and double collocation and 3‐point central finite difference) is compared for the solution of the set of partial differential equations describing the performance of a pressure swing adsorption (PSA) system for air separation on a carbon molecular sieve. It is shown that in terms of computer time there is little difference between single and double collocation methods but for comparable accuracy both these methods are very much faster than the finite difference method.