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Analysis of spurious eigenmodes in finite element equations

โœ Scribed by S. Bates; B. Cathers

Publisher
John Wiley and Sons
Year
1986
Tongue
English
Weight
693 KB
Volume
23
Category
Article
ISSN
0029-5981

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โœฆ Synopsis

Numerical analysis of difference schemes often reveals the presence of eigenmodes which do not feature in the continuum solution. An examination of the dispersion relation shows how the spurious and physical modes interact. The behaviour of certain wave-profiles was predicted using this analysis and the results confirmed by numerical experiment.

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