Article ID Journal Published Year Pages File Type
4627468 Applied Mathematics and Computation 2014 17 Pages PDF
Abstract

We prove existence and uniqueness of radial weak solutions of the doubly nonlinear parabolic equationut=div[D(u)ϕ(∇u)],ut=div[D(u)ϕ(∇u)],whereD   and ϕϕ satisfy some hypothesis. This cover the particular case where D(s)=s(1-s)D(s)=s(1-s) and ϕ(p)≔p/(1+|p|2)ϕ(p)≔p/(1+|p|2) which is the hydrological case. Numerical simulations are provided also.

Related Topics
Physical Sciences and Engineering Mathematics Applied Mathematics
Authors
, , ,