Zobrazeno 1 - 10
of 16
pro vyhledávání: '"N. I. Pushkina"'
Autor:
N. I. Pushkina
Publikováno v:
Physics of Wave Phenomena. 23:131-134
Acoustic phase conjugation is studied in a sandy marine sediment that contains air bubbles in its fluid fraction. The considered phase conjugation is a four-wave nonlinear parametric sound interaction caused by nonlinear bubble oscillations which are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4dad6a019bd730288804d7b3aa0318bb
https://doi.org/10.3103/s1541308x15020089
https://doi.org/10.3103/s1541308x15020089
Autor:
N. I. Pushkina
Publikováno v:
Physics of Wave Phenomena. 24:152-154
Formation of fourth-sound shock waves in narrow channels filled with superfluid helium is studied. Physical and mathematical conditions at the surface of discontinuity are established. These conditions differ somewhat from those for first- and second
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e6fa8ea3889c5bab3814e2ac8480d3a
https://doi.org/10.3103/s1541308x16020102
https://doi.org/10.3103/s1541308x16020102
Autor:
N. I. Pushkina
Publikováno v:
Physics of Wave Phenomena. 20:204-207
Nonlinear interaction of three acoustic waves in a sandy sediment is studied in the frequency range where there is a considerable wave velocity dispersion. The possibility of an experimental observation of the generation of a sound wave by two pump w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bbc7a3985fe9b65fced9e6eb22141d34
https://doi.org/10.3103/s1541308x12030077
https://doi.org/10.3103/s1541308x12030077
Autor:
N. I. Pushkina
Publikováno v:
Low Temperature Physics. 35:435-438
The possibility of quasistationary normal-component flow arising in superfluid helium in the presence of sufficiently intense first- and second-sound waves propagating in the helium is examined. The equations describing the flow are derived. The cont
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2edf1d4257a719db48c74f5330219819
https://doi.org/10.1063/1.3151989
https://doi.org/10.1063/1.3151989
Autor:
N. I. Pushkina
Publikováno v:
Physics of Wave Phenomena. 16:86-90
The effect of He3 nuclear magnetization relaxation on the second viscosity in quantum solutions subjected to an external oscillating magnetic field was studied. The cases of first-, second-, and forth-sound waves are examined. The expressions for the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94a39f60161ee49da464f5bb38ac6681
https://doi.org/10.3103/s1541308x08020039
https://doi.org/10.3103/s1541308x08020039
Generation of an acoustic wave by two pump sound waves is studied in a three-phase marine sediment that consists of a solid frame and the pore water with air bubbles in it. To avoid shock-wave formation the interaction is considered in the frequency
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0d2aaa4360a3fb41b64b97e2b4eeca96
http://arxiv.org/abs/1503.00901
http://arxiv.org/abs/1503.00901
The propagation of an acoustic wave through two-phase porous media with spatial variation in porosity is studied. The evolutionary wave equation is derived, and the propagation of an acoustic wave is numerically analyzed in application to marine sedi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::09f8ce4b8082c146de65befd1e4bafb2
Autor:
N. I. Pushkina
Publikováno v:
Acoustical Physics. 50:721-724
The problem of the nonlinear interaction between the fourth sound and an acoustic wave propagating in a porous medium filled with superfluid helium is solved. Based on the Landau equations of quantum fluid dynamics and on the Biot theory of mechanica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7464d335dadc92b8516bbb9184ee72d4
https://doi.org/10.1134/1.1825104
https://doi.org/10.1134/1.1825104
Publikováno v:
Acoustical Physics. 49:305-311
The evolution wave equation that describes the nonlinear propagation of bounded acoustic beams in two-phase marine sediments is derived. The equation is numerically studied in application to marine sediments with different physical parameters.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::990a4ebbce96a1b5fdb78f08b66d05ff
https://doi.org/10.1134/1.1574358
https://doi.org/10.1134/1.1574358
Autor:
N. I. Pushkina
Publikováno v:
Acoustical Physics. 47:214-217
Stimulated Raman-type acoustic scattering by bubble oscillations in three-phase marine sediments, which consist of a solid frame, the pore water, and air bubbles, is considered. A model is developed for the case of the bubbles surrounded by water. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fdd58babeba220ff4700f0c6527cb343
https://doi.org/10.1134/1.1355807
https://doi.org/10.1134/1.1355807