Report icon

Report

Diagonal Dominance and Positive Definiteness of Upwind Approximations for Advection Diffusion Problems

Abstract:

We examine whether three different upwind schemes for the positive definite advection diffusion problem can yield indefinite coefficient matrices. In particular, in line with the increasing use of adaptive meshes, we are concerned with discretisations on arbitrary grids but only in one dimension. We show that indefinite coefficient matrices can arise from certain approaches: this can present difficulties with efficient iterative solution techniques which might be required for corresponding ap...

Expand abstract

Actions


Access Document


Files:

Authors


Publication date:
1996-02-05
URN:
uuid:67c18644-ba90-459b-9cf2-ee2276c73141
Local pid:
oai:eprints.maths.ox.ac.uk:1331

Terms of use


Metrics


Views and Downloads






If you are the owner of this record, you can report an update to it here: Report update to this record

TO TOP