Resumo

REN, Jie; GAO, Jinzhang  e  YANG, Wu. Numerical Simulation of the Behaviors of the Bray-Liebhafsky Oscillating Chemical Reaction by a Four-variable Model. J. Mex. Chem. Soc [online]. 2012, vol.56, n.2, pp.131-138. ISSN 1870-249X.

Based on a ten-step chemical model involving the concentrations of I₂(aq), O₂(aq), and the intermediates of I^- and HIO₂, four independent variables and seven irreversible steps, the nonlinear behavior of Bray-Liebhafsky (BL) oscillating reaction was investigated. The results showed that with different values of initial concentrations of reactants in the process of simulation, both periodic oscillation and chaotic behavior could be observed. In addition, at the same initial concentrations and rate constants, the system becomes more and more regular after being chaos. That is to say, the translation from chaos to periodic oscillation at the same initial conditions appeared in the BL system. The nonlinear behavior of system was also investigated briefly.

Palavras-chave : Numerical simulation; Bray-Liebhafsky oscillating chemical reaction; chaos.