The generalized coalescence/redispersion micromixing model. A multiscale approach

The generalised coalescence/redispersion (gCR) micromixing model is formulated in the framework of the three scale mixing concept of stirred tank reactors. It is developed on the basis of a random coefficient differential equation system describing mass exchange interactions between the Kolmogorov scale fluid elements the average behaviour of which is modelled using the population balance approach. The model provides closed terms for both the chemical reactions and micromixing and it allows computing processes with either pre-mixed or unmixed feeds of reactors. A qualitative picture of producing the fluid elements in the eddy space as Kolmogorov microscale eddies, interpreted as mesomixing of the three scale mixing model is outlined.