Helium II thermal counterflow at large heat currents
- 1 April 1976
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 13 (7) , 2918-2923
- https://doi.org/10.1103/physrevb.13.2918
Abstract
Data for the temperature and pressure differences produced by the thermal counterflow of helium II in long capillaries are given and shown to define a region of nonlinear flow distinct from that described by Vinen. We suggest a simple modification of the Vinen theory associated with a secondary flow in the normal fluid and in good agreement with our data. The critical heat current for the onset of the secondary flow is shown to define a stability region in analogy to second-order phase transitions.Keywords
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