skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Controlling chaos by periodic perturbations in nonisothermal fluidized-bed reactor

Abstract

A two-phase model of a nonisothermal fluidized-bed catalytic reactor with consecutive exothermic reactions makes it possible to control the chaotic behavior by small parametric perturbations of an input variable with suitable frequency and amplitude. By periodic forcing of the feed temperature the chaotic behavior of the autonomous system can be controlled and become periodic even for small amplitudes of forcing. For constant frequency with change in forcing amplitudes the behavior of the system alternates between periodic and chaotic regimes via period doubling and period adding bifurcation mechanisms. When the amplitude is fixed, regular patterns also appear with small changes in the forcing frequency. Appropriate selection of the forcing frequency can improve the yield of the desired intermediate component in the consecutive reactions network A{yields}B{yields}C.

Authors:
;  [1]
  1. King Saud Univ., Riyadh (Saudi Arabia). Dept. of Chemical Engineering
Publication Date:
OSTI Identifier:
404586
Resource Type:
Journal Article
Journal Name:
AIChE Journal
Additional Journal Information:
Journal Volume: 42; Journal Issue: 11; Other Information: PBD: Nov 1996
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; FLUIDIZED BEDS; FLOW MODELS; CHEMICAL REACTORS; PROCESS CONTROL; TWO-PHASE FLOW; FLUID MECHANICS

Citation Formats

Ajbar, A, and Elnashaie, S S.E.H. Controlling chaos by periodic perturbations in nonisothermal fluidized-bed reactor. United States: N. p., 1996. Web. doi:10.1002/aic.690421103.
Ajbar, A, & Elnashaie, S S.E.H. Controlling chaos by periodic perturbations in nonisothermal fluidized-bed reactor. United States. https://doi.org/10.1002/aic.690421103
Ajbar, A, and Elnashaie, S S.E.H. 1996. "Controlling chaos by periodic perturbations in nonisothermal fluidized-bed reactor". United States. https://doi.org/10.1002/aic.690421103.
@article{osti_404586,
title = {Controlling chaos by periodic perturbations in nonisothermal fluidized-bed reactor},
author = {Ajbar, A and Elnashaie, S S.E.H.},
abstractNote = {A two-phase model of a nonisothermal fluidized-bed catalytic reactor with consecutive exothermic reactions makes it possible to control the chaotic behavior by small parametric perturbations of an input variable with suitable frequency and amplitude. By periodic forcing of the feed temperature the chaotic behavior of the autonomous system can be controlled and become periodic even for small amplitudes of forcing. For constant frequency with change in forcing amplitudes the behavior of the system alternates between periodic and chaotic regimes via period doubling and period adding bifurcation mechanisms. When the amplitude is fixed, regular patterns also appear with small changes in the forcing frequency. Appropriate selection of the forcing frequency can improve the yield of the desired intermediate component in the consecutive reactions network A{yields}B{yields}C.},
doi = {10.1002/aic.690421103},
url = {https://www.osti.gov/biblio/404586}, journal = {AIChE Journal},
number = 11,
volume = 42,
place = {United States},
year = {Fri Nov 01 00:00:00 EST 1996},
month = {Fri Nov 01 00:00:00 EST 1996}
}