本文研究了一类具有变指数源渗流方程的齐次Dirichlet边值问题ut=△um+up(x)证明了具有正初始能量渗流方程的解在有限时间爆破,并且给出方程解爆破时间的下界估计.
This paper deals with homogeneous Dirichlet boundary value problem to a class of porous medium equations with variable reaction ut=△um+up(x) A blow-up result is established for certain solution with positive initial energy. A Lower bound for blow-up time is given.