Наукова електронна бібліотека
періодичних видань НАН України
періодичних видань НАН України
On cavitation in liquid helium in a flow due to a vibrating quartz fork
Репозиторій DSpace/Manakin
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On cavitation in liquid helium in a flow due to a vibrating quartz fork
Тема:
Жидкий гелий
Інший ID:
PACS: 47.55.dp
Посилання:
On cavitation in liquid helium in a flow due to
a vibrating quartz fork / M. Blažková, D. Schmoranzer, L. Skrbek // Физика низких температур. — 2008. — Т. 34, № 4-5. — С. 380–390. — Бібліогр.: 28 назв. — англ.
Підтримка:
The authors appreciate the technical assistance of T.V. Chagovets, L. Dole al, M. Rotter, and P. Vacek; thank P. Bhm for his professional help with cavitation photography and J. Pei ka for providing the fork micrographs. This research is supported by the research plans MS 0021620834, AVOZ 10100520, by GA R under 202/05/0218 and GAUK 7953/2007.
Дата:
2008
Переглядів:
733
Завантажень:
765
Анотація:
Cavitation in normal and superfluid liquid ⁴He at saturated vapor pressure and slightly elevated pressures
has been experimentally studied in a flow due to quartz forks vibrating at high amplitudes. Above the
temperature- and pressure-dependent critical velocity, heterogeneous cavitation is observed both visually
and electrically, as a breakdown of the resonance response of the fork.We compare our results with available
experimental and discuss them using existing theoretical models. In particular, we show that thermal effects
leading to local overheating of the vicinity of the fork have to be taken into account, especially in normal liquid
⁴He.
