Concentration-dependent diffusion in a s
β
D.F. Hays; H.N. Curd
π
Article
π
1967
π
Elsevier Science
π
English
β 494 KB
## A uar&?ionaJ jormuka.tkm is presented which has aa it.8 E&r-Lagrange equatim the fundamental partial differentti equ&on of diffusion. This variational ex~e&on is applicable for both timedepend& and timeindependent boundary cond&ms and for a diffusion coe$cient which is a junction of the concentra