coefficient_diffusion#

Description#

Diffusion behavior which uses the COEFFICIENT to model variations in \(D\) with respect to the concentration.

(303)#\[\vect{J} = D(C) \nabla C\]

Syntax#

***behavior coefficient_diffusion \(~\,~\,~\,\) D COEFFICIENT

Stored Variables

prefix

size

description

default

dC

V

gradient of concentration

yes

J

V

flux of concentration

yes

C

S

the concentration

yes

Example#

***behavior coefficient_diffusion
    D             C
    5.50339E-22  -1000.
     5.50339E-22      0.
     4.02370E-20      0.29
     8.39143E-20      0.40
     1.02221E-18      0.55
     2.56706E-18      0.59
     2.56706E-18      0.66
     2.56706E-18   1000.

***return