Abstract
We construct blow-up patterns for the quasilinear heat equation
in Ω×(0,T), Ω being a bounded open convex set in ℝN with smooth boundary, with zero Dirichet boundary condition and nonnegative initial data. The nonlinear coefficients of the equation are assumed to be smooth and positive functions and moreoverk(u) andQ(u)/u p with a fixedp>1 are of slow variation asu→∞, so that (QHE) can be treated as a quasilinear perturbation of the well-known semilinear heat equation
We prove that the blow-up patterns for the (QHE) and the (SHE) coincide in a structural sense under the extra assumption
wheref(v) is a monotone solution of the ODEf′(v)=Q(f(v))/v p defined for allv≫1. If the integral is finite then the (QHE) is shown to admit an infinite number of different blow-up patterns.
Similar content being viewed by others
References
D. AMADORI, Unstable blow-up patternsDifferential Integral Equations, to appear
J. BEBERNES, S. BRICHER, Final time blowup profiles for semilinear parabolic equations via center manifold theory,SIAM J. Math. Anal. 23, 852–869 (1992)
J. BEBERNES, S. BRICHER, V.A. GALAKTIONOV, Asymptotics of blowup for weakly quasilinear parabolic problems,Nonlinear Anal., Theory, Meth. Appl. 23, 489–514 (1994)
A. BRESSAN, On the asymptotic shape of blow-up,Indiana Univ. Math. J. 39, 947–960 (1990)
A. BRESSAN, Stable blow-up patterns.J. Differential Equations 98, 57–75 (1992)
S. FILIPPAS, R.V. KOHN, Refined asymptotics for the blow-up ofu t −Δu=u p ,Comm. Pure Appl. Math. 45, 821–869 (1993)
A. FRIEDMAN, B. MCLEOD, Blow-up of positive solutions of semilinear heat equations,Indiana Univ. Math. J. 34, 425–447 (1985)
V.A. GALAKTIONOV, S.A. POSASHKOV, Estimates of localized unbounded solutions of quasilinear parabolic equations,Differential Equations 23, 1133–1143 (1987)
V.A. GALAKTIONOV, J.L. VAZQUEZ, Extinction for a quasuilinear heat equation with absorption II. A dynamical systems approach,Comm. Partial Differ. Equat. 19, 1107–1137 (1994)
M.A. HERRERO, J.J.L. VELÁZQUEZ, Generic behaviour of one-dimensional blow-up patterns,Annali Scuola Normale Sup. Pisa, Serie IV,XIX, 381–450 (1992)
L.M. HOCKING, K. STUARTSON, J.T. STUART, A non-linear instability burst in plane parallel flow,J. Fluid Mech. 51, 705–735 (1992)
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Bebernes, J., Bressan, A. & Galaktionov, V.A. On symmetric and nonsymmetric blowup for a weakly quasilinear heat equation. NoDEA 3, 269–286 (1996). https://doi.org/10.1007/BF01194067
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01194067