33.4.30 Mass Diffusion Coefficients Dialog Box

The Mass Diffusion Coefficients dialog box (opened by clicking on the Edit... button next to Mass Diffusivity in the Create/Edit Materials dialog box) allows you to define the diffusion coefficients of the species in the mixture. Its contents will depend on the method you selected for Mass Diffusivity. See Section  8.9.4 for details about these methods and the related inputs.

(Note that the Mass Diffusion Coefficients dialog box is a modal dialog box, which means that you must tend to it immediately before continuing the property definitions.)

For the dilute-approx method:

Controls

Species Di   contains a selectable list of all species in the mixture, from which you can select each species and specify its diffusion coefficient.

Coefficient   sets the diffusion coefficient for the selected species in the mixture.

For the multicomponent method:

Controls

Species Di, Species Dj   contain selectable lists of species in the mixture, from which you can select each pair of species and specify the diffusion coefficient of the selected Species Di in the selected Species Dj.

Coefficient   sets the diffusion coefficient for Species Di in Species Dj (which is equivalent to the diffusion coefficient for Species Dj in Species Di).