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一个一维非标准逆热传导问题的Fourier正则化方法
Fourier regularization of an one dimensional non-standard inverse heat conduction problem
【摘要】 一维非标准逆热传导问题ut+ ux =uxx,u(1,t) =g(t) ,u(x ,0 ) =0 , 0≤ x <∞ ,0 <t<∞ ,0≤ t<∞ ,x≥ 0是一个严重不适定问题 ,给数值处理带来极大困难 .本文给出了一种 Fourier正则化方法 ,恢复了解对数据的连续依赖性 ,并给出了误差估计
【Abstract】 The following non-standard inverse heat conduction problem arises in various application fields u t+u x=u xx, u(1,t)=g(t), u(x,0)=0, 0≤x<∞,0<t<∞, 0≤t<∞, x≥0. This problem is seriously ill-posed and it seems impossible to compute numerically the solution when it does not depend continuously on the data.In this paper the stability of this problem is recovered by a Fourier regularization method and the error estimation is given.
【关键词】 不适定问题;
反问题;
逆热传导;
正则化;
误差估计;
【Key words】 ill-posed problem; inverse problem; inverse heat conduction; regularization; error estimation;
【Key words】 ill-posed problem; inverse problem; inverse heat conduction; regularization; error estimation;
【基金】 国家自然科学基金资助项目 (49875 0 2 4 )
- 【文献出处】 兰州大学学报 ,Journal of Lanzhou University , 编辑部邮箱 ,2002年01期
- 【分类号】TK124
- 【被引频次】19
- 【下载频次】162