Structural-algebraic regularization for coupled systems of DAEs
Structural-algebraic regularization for coupled systems of DAEs
复制标题
DAE 耦合系统的结构代数正则化
DOI:
10.1007/s10543-015-0572-y
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发表时间:
2016
影响因子:
1.5
通讯作者:
Steinbrecher
中科院分区:
文献类型:
--
作者:
Scholz;Steinbrecher
In the automated modeling of multi-physics dynamical systems, frequently different subsystems are coupled together via interface or coupling conditions. This approach often results in large-scale high-index differential-algebraic equations (DAEs). Since the direct numerical simulation of these kinds of systems leads to instabilities and possibly non-convergence of numerical methods, a regularization or remodeling of such systems is required. In many simulation environments, a structural method that analyzes the system based on its sparsity pattern is used to determine the index and an index-reduced system model. However, this approach is not reliable for certain problem classes, and in particular not suited for coupled systems of DAEs. We present a new approach for the regularization of coupled dynamical systems that combines the Signature method (-method) for the structural analysis with algebraic regularization techniques. This allows to handle structurally singular systems and also enables a proper treatment of redundancies or inconsistencies in the system.
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DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
L. Scholz;A. Steinbrecher
通讯作者:
A. Steinbrecher
DOI:
--
发表时间:
2012
期刊:
Asian Symposium on Computer Mathematics
影响因子:
--
作者:
M. Giesbrecht;N. Pham
通讯作者:
N. Pham
DOI:
--
发表时间:
2004
期刊:
影响因子:
--
作者:
P. Kunkel;V. Mehrmann
通讯作者:
V. Mehrmann
影响因子:
1.5
作者:
Scholz;Steinbrecher
通讯作者:
Steinbrecher
DOI:
--
发表时间:
2009
期刊:
Simulation News Europe
影响因子:
--
作者:
NH Nilsson
通讯作者:
NH Nilsson