摘要
应用非线性变换以及线性热方程解的性质,得到了问题(1)存在δ*∈(0,+∞),使得当δ>δ*时,问题(1)的解在有限时间内产生爆破;而当δ≤δ*时,问题(1)的解整体存在。本文的结果将文[1]中的球形区域推广到了一般区域。
A kind of semilin ear heat equation with a con vection term in a general bounded domain in-stead of a ball of [1] is discussed, Using nonlinear change of variable and the properties of solutions tothe linear heat equation ,it is shown that there exists δ ̄*∈(0,+∞)such that the solution of the equa-tion blows up in finite time for δ>δ ̄* and the solution exists globally.
出处
《西北师范大学学报(自然科学版)》
CAS
1994年第4期17-19,共3页
Journal of Northwest Normal University(Natural Science)
基金
甘肃省教委科学基金