This paper deals with a nonlinear parabolic equation with a complicated source term, which is a product of localized source $e^{q u(0,t)}$, local source $e^{pu(x, t)}$, and weight function $a(x)$. We investigate how the three factors influence the asymptotic behavior of solutions. We show that the blow-up set consists of single point ${x=0}$ if $p>0$; when $ple 0$ with $p+q>0$, the blow-up takes place everywhere in $B$. Moreover, the blow-up rate estimation is established with precise coefficients determined.
展开▼
机译:本文处理具有复杂源项的非线性抛物方程,它是局部源$ e ^ {qu(0,t)} $,局部源$ e ^ {pu(x,t)} $和权重函数$ a(x)$。我们调查这三个因素如何影响解的渐近行为。我们证明,如果$ p> 0 $,则爆炸集合由单点$ {x = 0} $组成;当$ ple 0 $与$ p + q> 0 $时,爆炸在$ B $的任何地方发生。此外,利用确定的精确系数来建立爆破速率估计。
展开▼