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Far East Journal of Applied Mathematics

Far East Journal of Applied Mathematics
Volume 36, Issue 3, Pages 271 - 295 (September 2009)

THE PERTURBATION INDEX OF PDAE MODELS IN GROUNDWATER FLOW SIMULATIONS
Lutz Angermann (Germany) and Joachim Rang (Germany)

Abstract:
A significant number of models for the simulation of flows in porous media leads to initial-boundary value problems for nonlinear partial differential-algebraic equations (PDAEs). The paper investigates the linearized PDAEs from the point of view of weak solutions and presents an index concept extending the well-known perturbation index for DAEs.

Keywords and phrases: partial differential-algebraic equations, coupled systems, perturbation index.

Number of Downloads: 249 | Number of Views: 941

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P-ISSN: 0972-0960

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