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Generation of the vorticity mode by sound in a Bingham plastic

100%
Perelomova A., Wojda P.
Open Physics
|
2011
|
vol. 9
|
issue 5
1135-1143
EN
This study investigates interaction between acoustic and non-acoustic modes, such as vorticity mode, in some class of a non-newtonian fluid called Bingham plastic. The instantaneous equations describing interaction between different modes are derived. The attention is paid to the nonlinear effects in the field of intense sound. The resulting equations which describe dynamics of both sound and the vorticity mode apply to both periodic and aperiodic sound of any waveform. They use only instantaneous quantities and do not imply averaging over the sound period. The theory is illustrated by an example of acoustic force of vorticity induced in the field of a Gaussian sound beam. Some unusual peculiarities in both sound and the vorticity induced in its field as compared to a newtonian fluid, are discovered.
2
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Generation of the vorticity mode by sound in a vibrationally relaxing gas

80%
Perelomova A., Wojda P.
Open Physics
|
2012
|
vol. 10
|
issue 5
1116-1124
EN
The procedure of derivation of a new dynamical equation governing the vorticity mode that is generated by sound, is discussed in detail. It includes instantaneous quantities and does not require averaging over sound period. The resulting equation applies to both periodic and aperiodic sound as the origin of the vorticity mode. Under certain conditions, the direction of streamlines of the vorticity mode may be inverted as compared with that in a fluid with standard attenuation. This reflects an anomalous absorption of sound, when transfer of momentum of the vorticity mode into momentum of sound occurs. The theory is illustrated by a representative example of the generation of vorticity in a vibrationally relaxing gas in the field of periodic weakly diffracting acoustic beam.
3
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Nonlinear Excitation of the Non-Wave Perturbations by the Magnetoacoustic Waves in the Non-Isentropic Plasma

80%
Perelomova A.
Archives of Acoustics
|
2018
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vol. 43
|
issue 1
4
Content available remote

The vortex flow caused by sound in a bubbly liquid

80%
Perelomova A., Wojda P.
Open Physics
|
2014
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vol. 12
|
issue 5
305-314
EN
Generation of vorticity in the field of intense sound in a bubbly liquid in the free half-space is considered. The reasons for generation of vorticity are nonlinearity, diffraction, and dispersion. Acoustic streaming differs from that in a Newtonian fluid. Under some conditions, the vortex flow changes its direction. Conclusions concern streaming induced by a harmonic or an impulse Gaussian beam.
5
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Theoretical Studies of Nonlinear Generation Efficiency in a Bubble Layer

80%
Baranowska A.
|
6
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Studies of Nonlinear Sound Dynamics in Fluids Based on the Caloric Equation of State

70%
Perelomova A., Wojda P.
Archives of Acoustics
|
2010
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vol. 35
|
issue 4
7
Publication available in full text mode
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Impact of Boundary Conditions on Acoustic Excitation of Entropy Perturbations in a Bounded Volume of Newtonian Gas

61%
Perelomova A., Perelomova A.
Archives of Acoustics
|
2019
|
vol. 44
|
issue 2
8
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Nonlinear Interaction of Modes in a Planar Flow of a Gas with Viscous and Thermal Attenuation

61%
Perelomova A., Perelomova A.
Archives of Acoustics
|
2019
|
vol. 44
|
issue 3
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