Mass Diffusion Vectors

Mass Diffusion Vectors = {yes | no}

Description / Usage

Activating this post-processing option allows the user to visualize the diffusive mass flux directions of all species components in a problem. Species components result from the EQ = species_bulk equation card. With this option selected, the output EXODUS II file will contain nodal variables called Y0dif0 (diffusion of first species in x direction), Y0dif1 (diffusion of first species in y direction), Y0dif2 (diffusion of first species in z direction), Y1dif0 (diffusion of second species in x direction), Y2dif1 (diffusion of second species in y direction), … and so on, depending on the number of species components in the problem.

The permissible values for this postprocessing option are:

yes	Calculate the mass diffusion vectors and include in the output EXODUS II file.
no	Do not calculate the mass diffusion vectors.

Examples

Following is a sample card:

Mass Diffusion Vectors = yes

Technical Discussion

Currently this option is available only for FICKIAN and HYDRODYNAMIC mass flux types (see Diffusion Constitutive Equation card). In the FICKIAN case, the flux is computed with the base, constant diffusivity.

References

No References.