Approximation Of Infinite Boundary Condition And Its Application To Finite Element Methods
Hou-De Han 1, Xiao-Nan Wu 21 Peking University, Beijing, China
2 Tsinghua University, Beijing, China
Received 1984-9-15 Revised Online 2006-11-19
The exterior boundary value problems of Laplace equation and linear elastic equations are considered.A series of approximate infinite boundary conditions are given. Then the original problem is reduced to a boundary value problem on a bounded domain. The finite element approximation of this problem and its error estimate are obatined. Finally, a numerical example shows that this method is very effective.