Archives of Acoustics, 40, 4, pp. 539–546, 2015
10.1515/aoa-2015-0053

Thermal Self-Action of Acoustic Beams Containing Several Shock Fronts

Anna PERELOMOVA
Technical University of Gdansk
Poland

Thermal self-action of an acoustic beam with one discontinuity or several shock fronts is studied in a Newtonian fluid. The stationary self-action of a single sawtooth wave with discontinuity (or some integer number of these waves), symmetric or asymmetric, is considered in the cases of self-focusing and self-defocusing media. The results are compared with the non-stationary thermal self-action of the periodic sound. Thermal self-action of a single shock wave which propagates with the various speeds is considered.
Keywords: thermal self-focusing of acoustic beam; acoustic wave with discontinuity; acoustic shock waves; thermal lens.
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Copyright © Polish Academy of Sciences & Institute of Fundamental Technological Research (IPPT PAN).

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DOI: 10.1515/aoa-2015-0053