✦ LIBER ✦

Flow structure of thermal counterflow jet in He II

✍ Scribed by A. Nakano; M. Murakami; K. Kunisada

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 390 KB
Volume: 34
Category: Article
ISSN: 0011-2275
DOI: 10.1016/0011-2275(94)90091-4

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✦ Synopsis

The flow structure of a thermal counterflow jet is investigated by direct measurement of the normal fluid velocity with a laser Doppler velocimeter (LDV). The temporal and spatial variation of the normal fluid velocity is measured to investigate the detailed properties of a He II thermal counterflow jet. The velocity profile and the variation of the centre-line velocity with the axial distance are also obtained to determine the flow structure in the downstream region. It is found that the thermal counterflow jet in the far-field behaves like a fully developed turbulent jet in an ordinary fluid. However, it seems that the mode of development differs from that of an ordinary fluid jet.

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