Efficient index reduction algorithm for large scale systems of differential algebraic equations

Xiaolin Qin, Juan Tang, Yong Feng, Bernhard Bachmann and Peter Fritzson

Applied Mathematics and Computation, 2016, vol. 277, issue C, 10-22

Abstract: In many mathematical models of physical phenomenons and engineering fields, such as electrical circuits or mechanical multibody systems, which generate the differential algebraic equations (DAEs) systems naturally. In general, the feature of DAEs is a sparse large scale system of fully nonlinear and high index. To make use of its sparsity, this paper provides a simple and efficient algorithm for index reduction of large scale DAEs system. We exploit the shortest augmenting path algorithm for finding maximum value transversal (MVT) as well as block triangular forms (BTFs). We also present the extended signature matrix method with the block fixed point iteration and its complexity results. Furthermore, a range of nontrivial problems are demonstrated by our algorithm.

Keywords: Differential algebraic equations; Sparsity; Shortest augmenting path; Block triangular forms; Structural analysis (search for similar items in EconPapers)
Date: 2016
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:apmaco:v:277:y:2016:i:c:p:10-22

DOI: 10.1016/j.amc.2015.11.091

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