Abstract
The effect of mixing-induced inhomogeneity on the bistability hysteresis of the arsenite−iodate reaction was studied experimentally in a CSTR, involving a single premixed feedstream, and by simulation using the coalescence−redispersion model. Conditions were chosen for which the system may be described by a single dynamical variable. It was found that reduced stirring causes the hysteresis loop to contract and to remain inside the high-stirring loop. The steady-state probability density functions were constructed from the fluctuating time series and were found to be gaussian. They represent the stochastic description of the macroscopic stirring effect. The agreement of experiments and simulations confirms the micromixing scenario and the appropriateness of the mixing model.
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