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Analytic reduced‐order dynamic models for large equilibrium staged cascades
Author(s) -
Celebi Caglayan,
Chimowitz E. H.
Publication year - 1985
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690311213
Subject(s) - reduction (mathematics) , statistical physics , range (aeronautics) , process (computing) , product (mathematics) , computer science , mathematics , physics , engineering , geometry , aerospace engineering , operating system
A model reduction technique based upon modal analysis is presented for modeling the dynamics of general, large equilibrium staged cascades encountered in chemical processes. The analysis is general enough to encompass quite complex cascades involving multiple fee and/or product streams with nonideal thermodynamic behavior. The low‐order models proposed have a number of desirable features: the state variables have physical significance and model parameters are clearly related to the fundamental process parameters which are easily obtainable from steady‐state plant data. Quantitatively it is shown that the low‐order models proposed are in excellent agreement with the complete (high‐order) dynamic models on a range of problems some of which involve complex, nonideal cascades.