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An extension of the approach adopted in Part I was developed to improve the identification of diffusivity (D) in relation to the inverse mass diffusion problem. It was based on an estimation of mass fluxes from concentration profiles previously fitted with smoothing spline functions. Data was smoothed to remove noise and to compensate for low spatial resolution. Estimated D values were compared with...
An approach to identify mass diffusion coefficients (D) is presented, and applied to the case of a slab. It was based on a numerical exploitation of the concentration profiles to estimate the mass fluxes. The effect of the quality of the experimental data (spatial resolution, Δz¯, temporal resolution, ΔFo, of the concentration profiles, sampling) on the bias and sensitivity of the method was studied...
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