Diffuse interface effective width

Within this interacting-filament regime of the fast binary reaction under mixing by a complex flow, the approach of the product amount to its final equilibrium value is expected to proceed exponentially. This can be argued by considering the equations for product width and interface effective dimension (Karolyi and Tel, 2005) or by noting from Eqs. (5.8)-(5.9) that the decay of the product concentration C towards its final value T/2 is described by the dynamics of the auxiliary field [Pg.162]

Figure 9.7 shows concentration profiles schematically for A and B according to the two-film model. Initially, we ignore the presence of the gas film and consider material balances for A and B across a thin strip of width dx in the liquid film at a distance x from the gas-liquid interface. (Since the gas-film mass transfer is in series with combined diffusion and reaction in the liquid film, its effect can be added as a resistance in series.)... 

Pe = 10. The model shows interface width (e.g., the interface between two adjacent species) as a strong function of Pe (and Eq). In the conditions Saville modeled, Taylor dispersion increases the effective dispersion coefficient up to 18-fold over diffusion alone. 

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