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Amplitude degradation of time-reversed pulses in nonlinear absorbing thermoviscous fluids.

Abstract:

The linear wave equation in a lossless medium is time reversible, i.e., every solution p(x, t) has a temporal mirror solution p(x, -t). Analysis shows that time reversal also holds for the lossless nonlinear wave equation. In both cases, time-reversal invariance is violated when losses are present. For nonlinear propagation loses cannot normally be ignored; they are necessary to prevent the occurrence of multivalued waveforms. Further analysis of the nonlinear wave equation shows that amplifi...

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Publication status:
Published

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Authors


Hallaj, IM More by this author
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Engineering Science
Barbone, PE More by this author
Publisher:
Elsevier Science B.V.
Journal:
Ultrasonics
Volume:
38
Issue:
9
Pages:
885-889
Publication date:
2000-09-05
DOI:
EISSN:
1874-9968
ISSN:
0041-624X
URN:
uuid:274075e3-86b3-4dd1-9b74-ed50cb08b783
Source identifiers:
327699
Local pid:
pubs:327699
Language:
English
Keywords:

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