A natural norm for the method of characteristics using discontinuous finite elements : 2D and 3D case
A natural norm for the method of characteristics using discontinuous finite elements : 2D and 3D case
复制标题
使用不连续有限元的特征方法的自然范数:2D 和 3D 情况
DOI:
10.1051/m2an:1999142
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发表时间:
1999
期刊:
影响因子:
--
通讯作者:
A. Machmoum
中科院分区:
文献类型:
--
作者:
J. Baranger;A. Machmoum
We consider the numerical approximation of a first order
stationary hyperbolic equation by the method of characteristics with pseudo time step k using discontinuous finite elements on a mesh ${\cal T}_h$
. For this method, we exhibit a “natural” norm || || h,k for which we show that the discrete variational problem $P_h^k$
is well posed and we
obtain an error estimate. We show that when k goes to zero problem $(P_h^k)$
(resp. the || || h,k norm)
has as a limit problem ( P h ) (resp. the || || h norm) associated to the Galerkin discontinuous
method. This extends to two and three space dimension our previous results obtained in one space dimension.