Helium II thermal counterflow at large heat currents: Profound effects of geometry
- 1 February 1978
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 17 (3) , 1455-1457
- https://doi.org/10.1103/physrevb.17.1455
Abstract
Data for the temperature difference produced by the thermal counterflow of He II in long glass tubes of rectangular cross section are given and compared to earlier data from circular tubes. Both geometries display a region of mutual friction described by the Vinen theory. In the circular tubes this region terminates at a critical heat current above which an additional source of dissipation is present. This critical heat current and dissipation are not observed in any of the three rectangular tubes studied. The significance of this observation to the nature of the flow in the circular tubes is discussed.Keywords
This publication has 4 references indexed in Scilit:
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- Helium II thermal counterflow at large heat currentsPhysical Review B, 1976
- Helium II thermal counterflow: Temperature- and pressure-difference data and analysis in terms of the Vinen theoryPhysical Review B, 1976
- Mutual friction in a heat current in liquid heliumn. II. IV. Critical heat currents in wide channelsProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1958