摘要
用边界元法求解渗流自由面需预先设定自由面的初始位置。先对自由面初始位置进行优化,以便得到合理的计算网格,再按常规方法迭代求解。计算结果表明,与有限元法相比计算精度较高,具有更好的收敛性与更高的计算效率。
The initial position of free surface needs to be set in seepage free surface analysis with boundary element method. First, suitable computational grid was obtained by optimizing initial position of free surface, then, the result was obtained by traditional iterative algorithm. The homogenous rectangle dam was computed by this method and finite element method separately. This result shows that this method has property of great precision, better convergence and higher computational efficiency comparing with finite element method.
出处
《水电能源科学》
2008年第6期73-75,共3页
Water Resources and Power
关键词
渗流
自由面
边界元法
有限元法
seepage
free surface
boundary element method
finite element method
