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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 w...

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Publication status:
Published
Peer review status:
Peer reviewed

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Institution:
University of Oxford
Division:
MPLS
Department:
Engineering Science
Oxford college:
Magdalen College
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Engineering Science
Oxford college:
Harris Manchester College
Role:
Author
ORCID:
0000-0001-6394-5667
Publisher:
Elsevier Publisher's website
Journal:
Ultrasonics Journal website
Volume:
38
Issue:
9
Pages:
885-889
Publication date:
2000-08-30
DOI:
EISSN:
1874-9968
ISSN:
0041-624X
Pmid:
11012010
Source identifiers:
327699
Language:
English
Keywords:
Pubs id:
pubs:327699
UUID:
uuid:5e800b73-2a34-4013-a5b2-1bdf176c94ce
Local pid:
pubs:327699
Deposit date:
2018-12-13

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