Simulation of noise characteristic effects on stochastic resonance in Belousov-Zhabotinsky flow reaction

A three-variable model, which was proposed to account for the stochastic re sonance (SR) in Belousov-Zhabotinsky (B-Z) reaction in a continuous-flow st irred-tank reactor, is investigated when the control parameter k(f), the fl ow rate, is modulated by noise near supercritical Hopf bifurcation point. U sing the computer simulation, noise-induced oscillations are observed, and the signal-to-noise ratio (SNR) goes through a maximum with the increment o f noise intensity, which means occurrence of stochastic resonance. In addit ion, we have also investigated the effects of correlation time of colored n oise and the duration time of white noise on the system's dynamics.