摘要
利用小波多分辨分析和重构原理,通过对常规小波多尺度方法加入逐层修正步骤实现了对其的改进,并将改进后的方法成功地用于具有周期变化导水系数的二维稳定水流的数值模拟。数值结果表明:改进的小波多尺度方法是一种适合求解多尺度问题的数值算法,不仅保持了较高的计算精度,而且大大地提高了计算效率。
A improved wavelet-based homogenization method is achieved by using successive correction procedure.And the improved method is applied with the two-dimensional stationary water flow with periodic oscillating in hydraulic conductivity coefficient.With the traditional finite difference method,numerical results show that the improved wavelet-based method keep better accuracy and efficiency.Compared with the wavelet-based homogenization methods,the improved wavelet-based method further improve the calculation accuracy.
出处
《航空计算技术》
2012年第1期43-45,共3页
Aeronautical Computing Technique
基金
陕西省科技新星基金项目资助(2011kjxx12)
宝鸡市科技攻关计划基金项目资助(11R-W06)
宝鸡文理学院重点项目资助(2K11134)
关键词
HAAR小波
多尺度算法
稳定水流
数值模拟
wavelet analysis
multi-scale algorithm
stable flow
numerical simulation
