Bloch-Wave Homogenization on Large Time Scales and Dispersive Effective Wave Equations
Bloch-Wave Homogenization on Large Time Scales and Dispersive Effective Wave Equations
复制标题
大时间尺度上的布洛赫波均匀化和色散有效波动方程
DOI:
10.1137/130935033
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发表时间:
2013
期刊:
影响因子:
--
通讯作者:
B.Schweizer
中科院分区:
文献类型:
--
作者:
A. Lamacz;T. Dohnal;B.Schweizer
We investigate second order linear wave equations in periodic media, aiming at the derivation of effective equations in,. Standard homogenization theory provides, for the limit of a small periodicity length, an effective second order wave equation that describes solutions on time intervals. In order to approximate solutions on large time intervals, one has to use a dispersive, higher order wave equation. In this work, we provide a well-posed, weakly dispersive effective equation and an estimate for errors between the solution of the original heterogeneous problem and the solution of the dispersive wave equation. We use Bloch-wave analysis to identify a family of relevant limit models and introduce an approach to select a well-posed effective model under symmetry assumptions on the periodic structure. The analytical results are confirmed and illustrated by numerical tests.
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影响因子:
1.5
作者:
B. Schweizer;Marco Veneroni
通讯作者:
Marco Veneroni
DOI:
--
发表时间:
1999
期刊:
影响因子:
--
作者:
J. Francu;P. Krejčí
通讯作者:
P. Krejčí
DOI:
--
发表时间:
1992
期刊:
影响因子:
--
作者:
G. Francfort;F. Murat
通讯作者:
F. Murat
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
B. Schweizer
通讯作者:
B. Schweizer
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
A. Lamacz
通讯作者:
A. Lamacz