Hydrodynamic impulse and energy of vortex tangle in superfluid turbulent He-II
The average hydrodynamic impulse (or Lamb impulse) Jv in the counterflowing superfluid,
 turbulent He-II and the kinetic energy E, which is associated with the chaotic vortex filaments, are
 calculated. These quantities are defined as averages of the classical quantities taken over t...
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| Published in: | Физика низких температур |
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| Date: | 1998 |
| Main Authors: | , |
| Format: | Article |
| Language: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
1998
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| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/176368 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Hydrodynamic impulse and energy of vortex tangle in superfluid turbulent He-II / S. K. Nemirovskii, V. A. Lushnikov // Физика низких температур. — 1998. — Т. 24, № 2. — С. 127-131. — Бібліогр.: 11 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862649127771308032 |
|---|---|
| author | Nemirovskii, S.K. Lushnikov, V.A. |
| author_facet | Nemirovskii, S.K. Lushnikov, V.A. |
| citation_txt | Hydrodynamic impulse and energy of vortex tangle in superfluid turbulent He-II / S. K. Nemirovskii, V. A. Lushnikov // Физика низких температур. — 1998. — Т. 24, № 2. — С. 127-131. — Бібліогр.: 11 назв. — англ. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| description | The average hydrodynamic impulse (or Lamb impulse) Jv in the counterflowing superfluid,
turbulent He-II and the kinetic energy E, which is associated with the chaotic vortex filaments, are
calculated. These quantities are defined as averages of the classical quantities taken over the stochastic
vortex loop distribution The averaging procedure was performed by using the Gaussian model of the
chaotic vortex tangle elaborated earlier. Calculations show that the quantity Jy has an only a component
in the direction of external counterflow velocity (created, e.g., by a heater). As for the energy, it is
shown that besides the usual local contribution, the quantity E includes additional terms due to a
long-range interaction. Some dynamic properties of the turbulent He-II due to the impulse and energy
of the vortex configuration, such as suppression of the superfluid density and decrease in the velocity of
the second sound that propagates in the superfluid turbulent He-II, are discussed.
|
| first_indexed | 2025-12-01T15:31:41Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-176368 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-12-01T15:31:41Z |
| publishDate | 1998 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Nemirovskii, S.K. Lushnikov, V.A. 2021-02-04T13:47:07Z 2021-02-04T13:47:07Z 1998 Hydrodynamic impulse and energy of vortex tangle in superfluid turbulent He-II / S. K. Nemirovskii, V. A. Lushnikov // Физика низких температур. — 1998. — Т. 24, № 2. — С. 127-131. — Бібліогр.: 11 назв. — англ. 0132-6414 PASC: 67.40.-w https://nasplib.isofts.kiev.ua/handle/123456789/176368 The average hydrodynamic impulse (or Lamb impulse) Jv in the counterflowing superfluid,
 turbulent He-II and the kinetic energy E, which is associated with the chaotic vortex filaments, are
 calculated. These quantities are defined as averages of the classical quantities taken over the stochastic
 vortex loop distribution The averaging procedure was performed by using the Gaussian model of the
 chaotic vortex tangle elaborated earlier. Calculations show that the quantity Jy has an only a component
 in the direction of external counterflow velocity (created, e.g., by a heater). As for the energy, it is
 shown that besides the usual local contribution, the quantity E includes additional terms due to a
 long-range interaction. Some dynamic properties of the turbulent He-II due to the impulse and energy
 of the vortex configuration, such as suppression of the superfluid density and decrease in the velocity of
 the second sound that propagates in the superfluid turbulent He-II, are discussed. This work was funded in part by the Russian Foundation for Basic Research, Grant N 96-02-19414. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Специальный выпуск International Workshop on Low Temperature Microgravity Physics Hydrodynamic impulse and energy of vortex tangle in superfluid turbulent He-II Article published earlier |
| spellingShingle | Hydrodynamic impulse and energy of vortex tangle in superfluid turbulent He-II Nemirovskii, S.K. Lushnikov, V.A. Специальный выпуск International Workshop on Low Temperature Microgravity Physics |
| title | Hydrodynamic impulse and energy of vortex tangle in superfluid turbulent He-II |
| title_full | Hydrodynamic impulse and energy of vortex tangle in superfluid turbulent He-II |
| title_fullStr | Hydrodynamic impulse and energy of vortex tangle in superfluid turbulent He-II |
| title_full_unstemmed | Hydrodynamic impulse and energy of vortex tangle in superfluid turbulent He-II |
| title_short | Hydrodynamic impulse and energy of vortex tangle in superfluid turbulent He-II |
| title_sort | hydrodynamic impulse and energy of vortex tangle in superfluid turbulent he-ii |
| topic | Специальный выпуск International Workshop on Low Temperature Microgravity Physics |
| topic_facet | Специальный выпуск International Workshop on Low Temperature Microgravity Physics |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/176368 |
| work_keys_str_mv | AT nemirovskiisk hydrodynamicimpulseandenergyofvortextangleinsuperfluidturbulentheii AT lushnikovva hydrodynamicimpulseandenergyofvortextangleinsuperfluidturbulentheii |