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PROPAGATION AND STABILITY OF WAVELIKE SOLUTIONS OF FINITE-DIFFERENCE EQUATIONS WITH VARIABLE-COEFFICIENTS

Abstract:

An asymptotic approach is used to analyze the propagation and dissipation of wavelike solutions to finite difference equations. It is shown that to first order the amplitude of a wave is convected at the local group velocity and varies in magnitude if the coefficients of the finite difference equation vary. Asymptotic boundary conditions coupling the amplitudes of different wave solutions are also derived. Equations are derived for the motion of wavepackets and their interaction at boundaries...

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Publication status:
Published

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Authors


THOMPKINS, W More by this author
Journal:
JOURNAL OF COMPUTATIONAL PHYSICS
Volume:
58
Issue:
3
Pages:
349-360
Publication date:
1985
DOI:
EISSN:
1090-2716
ISSN:
0021-9991
URN:
uuid:9da0e56e-986c-4c60-a68b-1ab23c667f86
Source identifiers:
8004
Local pid:
pubs:8004
Language:
English

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