Journal
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
Volume 190, Issue 11-12, Pages 1467-1482Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/S0045-7825(00)00173-0
Keywords
moving meshes; geometric conservation laws; flow solvers; aeroelasticity
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The objective of this paper is to establish a firm theoretical basis for the enforcement of discrete geometric conservation laws (D-GCLs) while solving flow problems with moving meshes. The GCL condition governs the geometric parameters of a given numerical solution method, and requires that these be computed so that the numerical procedure reproduces exactly a constant solution. In this paper, we show that this requirement corresponds to a time-accuracy condition. More specifically, we prove that satisfying an appropriate D-GCL is a sufficient condition for a numerical scheme to be at least first-order time-accurate on moving meshes. (C) 2000 Elsevier Science S.A. All rights reserved.
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