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关于非Newton渗流方程解的存在性的研究
引用本文:雷艳,孙健. 关于非Newton渗流方程解的存在性的研究[J]. 长春工程学院学报(自然科学版), 2009, 10(1): 14-15,45
作者姓名:雷艳  孙健
作者单位:1. 吉林建筑T程学院,长春,130021
2. 鞍山市矿山设计研究院,鞍山,114000
摘    要:通过对非Newton方渗流方程ut=div( |▽u^m|^p-2 ▽u^m)的Cauchy问题:QT =R^N × (0,T) , u(x,0) =u0(x), x∈R^N,当p〉1,0 〈m≤1,0 〈 T〈∞ ,m(p - 1 ) 〈 1 时的研究,得到了在u0∈C^∞(R^N)且允许U0有一定增长性,即满足条件:C1 (1 + |x|p/p-1)^p-1/m(p-1)-1≤u0 (x) ≤ C2 (1 + |x|p/p-1)^p-1/1-m(p-1)时,其中C1≤C2为正常数,则初值问题存在局部广义解.

关 键 词:非Newton渗流方程  Cauchy问题  局部广义解

Research on solution existence about Non-Newton filtration equations
LEI Yan,SUN Jian. Research on solution existence about Non-Newton filtration equations[J]. Journal of Changchun Institute of Technology(Natural Science Edition), 2009, 10(1): 14-15,45
Authors:LEI Yan  SUN Jian
Affiliation:LEI Yan, et al. (Jilin Architectural Engineering Institute, Changchun 130021, China)
Abstract:This paper is mainly a survey of Cauchy problem for non - Newton filtration equation is the fol- lowing:ut=div( |▽u^m|^p-2 ▽u^m) , QT =R^N × (0,T) , u(x,0) =u0(x), x∈R^N,where p 〉 1,0 〈m≤1, 0 〈 T〈∞ ,m(p - 1 ) 〈 1 ,the principal results are the following: C1 (1 + |x|p/p-1)^p-1/m(p-1)-1≤u0 (x) ≤ C2 (1 + |x|p/p-1)^p-1/1-m(p-1), x∈R^N ,where C1 ≤C2 are positive constants, then (4) - (5) admits locally generalized solutions u(x,t).
Keywords:non - Newton filtration equation  Cauchy problem  locally generalized solutions
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