✦ LIBER ✦

Heat transport in He II channel with phase transition

✍ Scribed by T. Okamura; T. Suzuki; N. Seki; S. Kabashima

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 601 KB
Volume: 34
Category: Article
ISSN: 0011-2275
DOI: 10.1016/0011-2275(94)90168-6

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✦ Synopsis

Experimental and numerical investigations have been carried out on the heat transport characteristics in a channel where atmospherically pressurized He II coexists with He I. The channel has a rectangular cross-section and both ends are open to the bath. One of the side walls of the channel is heated uniformly. The channel is placed vertically or horizontally in the bath. The experimental results are analysed by two-dimensional time-dependent numerical calculations. An explicit finite element scheme is applied to the two-fluid equations which include the Gorter-Mellink mutual friction term. It is found that the applied heat is transported by one-dimensional internal convection through the channel filled with single phase He II. Once He I is generated in the channel, however, two-dimensional flow occurs due to natural convection and this influences the transport of heat.

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