%0 Journal Article
%T APPROXIMATE METHODS FOR A FREE BOUNDARY PROBLEM OCCURRING IN AXISYMMETRIC FILTRATION<br>轴对称渗流中自由边界问题的近似解法
%A XU Zuoliang
%A ZHANG Guanquan
%A <br>许作良
%A 张关泉
%J 计算数学
%D 2000
%I 
%X In this paper, we discuss a free boundary problem occurring in axisymmetric filtration with nonhomogeneous anisotropic medium, which can be transformed into a mixed boundary value problem for nonlinear elliptic complex equations. By using Newton imbedding method, approximate solutions of the mixed boundary Value problem are obtained, and if proper conditions hold, we have also given error estimates of the approximate solutions.
%K Filrtation
%K Free boundary problem
%K Elliptic complex equations
%K approximate solutions<br>自由边界问题
%K 椭圆型复方程
%K 近似解
%K 轴对称渗流
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=37F46C35E03B4B86&jid=CC77F3CEF526D9CF0B3021650FB4E57E&aid=9ABCB9C63384441E&yid=9806D0D4EAA9BED3&vid=BC12EA701C895178&iid=0B39A22176CE99FB&sid=D5C73DEF4CF8FAF3&eid=6ED15D8DCB279BC4&journal_id=0254-7791&journal_name=计算数学&referenced_num=0&reference_num=9