摘要
本文在非等距网格上给出了非线性随圆奇异摄动问题的解,这种方法是基于积分方程的数值解法.证明了差分格式的一阶一致收敛性.并给出了数值例子。k,6R¥;¥m#@temHxs*#MatghNKghH--g#k¥.¥texsolution.eC'(I)totheproblem(2.l),andthat'followingrepesentationholds,u(x)-=u,(x)+vd(x)+yi(x),where.V,(x) ̄Me-cp(M),(hereandthroughouttheletterMdenotesanyconstantindependentsofs).Becauseoftheinversemonotonicjtyof(2.l),wecanprove[31f"'Lcmma2Letcondition(2..2)hold.Thenforthesolution..C[sl(I)toproblem(2.1),thereholdsfori ̄0,l,2,3,Introducethenon--equidiStantmeshi={x,:0<i<n,xo ̄0,x. ̄l,hI=xiI.Ihtegratingonce,w?
Nonlinear elliptic singular perturbation problem is solved on non-equidistantmeshes. The method in this paper is based on the numerical solution of integral equations [1]. The first order uniform accuracy of the scheme is proved. Numercal example is presented.
出处
《南京大学学报(自然科学版)》
CSCD
1994年第2期209-216,共8页
Journal of Nanjing University(Natural Science)
关键词
数值方法
非线性
奇摄动
numerical method, singular perturbation, non-equidistant mesh