Elsevier

Physica B+C

Volume 114, Issue 2, August 1982, Pages 167-173
Physica B+C

Turbulence and cooling effect in adiabatic flow of HeII

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Abstract

Investigations are reported on the thermal effect which occurs when superfluid HeII is forced to flow through a system consisting of a superleak, a chamber and a capillary in series. Varying the flow velocity in the capillary, it is found that there is a rather sharp transition in the behavior of the thermal effect. An estimation of the Reynolds number suggests that this transition corresponds to the classical laminar-turbulent transition in the capillary. This turbulent state is essential for the cooling effect in this device.

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Cited by (3)

A part of which has been reported at the 16th International Conference on Low Temperature Physics (Physica 108B (1981) 1109).

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Present address: Technology Development Center, Fuji Photo Film Company, Miyadai, Kaisei-machi, Ashigarakami-gun Kanagawa Pref., Japan.

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