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Institut für Wasserbau - IWS

Selected Topics and International Network Lectures

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Donnerstag
03.07.2008
16:00 Uhr
David Werner
Lehrstuhl für Hydromechanik und Hydrosystemmodellierung, Institut für Wasserbau, Uni Stuttgart

Harmonic mean values of positive definite tensors: Motivation for developing a MPFA-scheme

User of UG and DUMUX-Codes often apply a generalized formula of harmonic means for permeablilities. This formula, originally derived for 1D-Codes, has some serious drawbacks in its simple generalization. I want to discuss this topic and present a different method for calculating a mean tensor. Starting with these thoughts on interpretation of weighted permeability tensors in the application of finite volume discretizations, I want to go on with a motivation for a certain multipoint flux approximation (MPFA) method.