2004 Volume 2004 Pages 20040018
In this paper, element moving algorithm for finite element analysis of shallow flow is proposed, and its algorithm and verification results are shown. This algorithm moves nodes on shoreline according to the movement of brink. And the nodes on shoreline are exchanged one by one when the transformation of the element grows. The features of the present algorithm are as follows. 1) The generation of the distorted element is limited to the vicinity of the shoreline. 2) Because restructuring, division and integration of elements are not caused in the process of the calculation, the load of the element movement processing to the analysis of the flow is small. An uniform slope and a coupled slope were taken up for a verification example. And the results were shown that this method was able to hold bottom shape of tidal flat compared with boundary moving method by Lagrangian method.
