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热传导方程的小波解法
WAVELET SOLVING PROCESS OF HEAT-CONDUCTION EQUATION
【摘要】 本文利用微分算子的小波表示,讨论一维热传导方程初值问题的Daubechies小波解,给出此问题的显式离散格式.由于小波在时间和频率上的局部性,此方法特别适用于有奇异解的热传导方程,逼近精度高,而且没有发生解的振荡现象。
【Abstract】 In this paper, the initial value problem of one-dimension heat-conduction equation solved by Daubechies wavelet is discussed. The explicit discrete scheme of the above problem is given using the wavelet representation of differential operator. Because the wavelets have the time-frequency local property, the above method especially adapt to the heat-conduction equation with the singular solution, and its accuracy is high, and do not have the oscillation phenomenon.
【关键词】 热传导方程;
微分算子小波近似;
显式离散格式;
【Key words】 Heat-conduction equation; differential operator wavelet approximate; explicit discrete scheme;
【Key words】 Heat-conduction equation; differential operator wavelet approximate; explicit discrete scheme;
【基金】 国家自然科学基金;黑龙江省自然科学基金资助项目.
- 【文献出处】 应用数学学报 ,Acta Mathematicae Applicatae Sinica , 编辑部邮箱 ,2001年01期
- 【分类号】O241
- 【被引频次】30
- 【下载频次】1169