Comments on ‘the group velocity of some
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Philip M. Gresho; Robert L. Lee
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Article
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1987
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John Wiley and Sons
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English
⚖ 256 KB
The proper phase and group speeds when quadratic finite elements are applied to the one-dimensional pure advection equation are presented and the myth of a spurious computational mode is dispelled. KEY WORDS Quadratic Elements FEM Phase Speed Spurious Modes In a very interesting and generally well