Acoustic Heating Produced in the Boundary Layer
Instantaneous acoustic heating of a viscous fluid flow in a boundary layer is the subject of investigation. The governing equation of acoustic heating is derived by means of a special linear combination of conser- vation equations in the differential form, which reduces all acoustic terms in the l...
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| Format: | Article |
| Language: | English |
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Institute of Fundamental Technological Research Polish Academy of Sciences
2013-10-01
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| Series: | Archives of Acoustics |
| Subjects: | |
| Online Access: | https://acoustics.ippt.pan.pl/index.php/aa/article/view/114 |
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| _version_ | 1849424014209974272 |
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| author | Anna PERELOMOVA Weronika PELC–GARSKA |
| author_facet | Anna PERELOMOVA Weronika PELC–GARSKA |
| author_sort | Anna PERELOMOVA |
| collection | DOAJ |
| description | Instantaneous acoustic heating of a viscous fluid flow in a boundary layer is the subject of investigation.
The governing equation of acoustic heating is derived by means of a special linear combination of conser-
vation equations in the differential form, which reduces all acoustic terms in the linear part of the final
equation but preserves terms belonging to the thermal mode. The procedure of decomposition is valid in
a weakly nonlinear flow, it yields the nonlinear terms responsible for the modes interaction. Nonlinear
acoustic terms form a source of acoustic heating in the case of the dominative sound. This acoustic source
reflects the thermoviscous and dispersive properties of a fluid flow. The method of deriving the governing
equations does not need averaging over the sound period, and the final governing dynamic equation of
the thermal mode is instantaneous. Some examples of acoustic heating are illustrated and discussed, and
conclusions about efficiency of heating caused by different waveforms of sound are made. |
| format | Article |
| id | doaj-art-3139c5e23e3545a69845c1b8cad38405 |
| institution | Kabale University |
| issn | 0137-5075 2300-262X |
| language | English |
| publishDate | 2013-10-01 |
| publisher | Institute of Fundamental Technological Research Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Acoustics |
| spelling | doaj-art-3139c5e23e3545a69845c1b8cad384052025-08-20T03:30:23ZengInstitute of Fundamental Technological Research Polish Academy of SciencesArchives of Acoustics0137-50752300-262X2013-10-01372Acoustic Heating Produced in the Boundary LayerAnna PERELOMOVA0Weronika PELC–GARSKA1Faculty of Applied Physics and Mathematics, Gdańsk University of TechnologyFaculty of Applied Physics and Mathematics, Gdańsk University of TechnologyInstantaneous acoustic heating of a viscous fluid flow in a boundary layer is the subject of investigation. The governing equation of acoustic heating is derived by means of a special linear combination of conser- vation equations in the differential form, which reduces all acoustic terms in the linear part of the final equation but preserves terms belonging to the thermal mode. The procedure of decomposition is valid in a weakly nonlinear flow, it yields the nonlinear terms responsible for the modes interaction. Nonlinear acoustic terms form a source of acoustic heating in the case of the dominative sound. This acoustic source reflects the thermoviscous and dispersive properties of a fluid flow. The method of deriving the governing equations does not need averaging over the sound period, and the final governing dynamic equation of the thermal mode is instantaneous. Some examples of acoustic heating are illustrated and discussed, and conclusions about efficiency of heating caused by different waveforms of sound are made.https://acoustics.ippt.pan.pl/index.php/aa/article/view/114acoustic heatingweak dispersionboundary layer |
| spellingShingle | Anna PERELOMOVA Weronika PELC–GARSKA Acoustic Heating Produced in the Boundary Layer Archives of Acoustics acoustic heating weak dispersion boundary layer |
| title | Acoustic Heating Produced in the Boundary Layer |
| title_full | Acoustic Heating Produced in the Boundary Layer |
| title_fullStr | Acoustic Heating Produced in the Boundary Layer |
| title_full_unstemmed | Acoustic Heating Produced in the Boundary Layer |
| title_short | Acoustic Heating Produced in the Boundary Layer |
| title_sort | acoustic heating produced in the boundary layer |
| topic | acoustic heating weak dispersion boundary layer |
| url | https://acoustics.ippt.pan.pl/index.php/aa/article/view/114 |
| work_keys_str_mv | AT annaperelomova acousticheatingproducedintheboundarylayer AT weronikapelcgarska acousticheatingproducedintheboundarylayer |