Abstract:
The Cauchy problem for a degenerate parabolic equation with a source and inhomogeneous density of the form
ρ(x)∂u∂t=div(um−1|Du|λ−1Du)+ρ(x)up.
is studied. Time global existence and nonexistence conditions are found for a solution to the Cauchy problem. Exact estimates of the solution are obtained in the case of global solvability.
Key words:
equations with inhomogeneous density, degenerate parabolic equation, blowup solution, existence and nonexistence theorems.
Citation:
A. V. Martynenko, A. F. Tedeev, “On the behavior of solutions to the Cauchy problem for a degenerate parabolic equation with inhomogeneous density and a source”, Zh. Vychisl. Mat. Mat. Fiz., 48:7 (2008), 1214–1229; Comput. Math. Math. Phys., 48:7 (2008), 1145–1160