Numerical Investigation of Thermal Counterflow of He II Past Cylinders

We investigate numerically, for the first time, the thermal counterflow of superfluid helium past a cylinder by solving with a finite volume method the complete so-called two-fluid model. In agreement with existing experimental results, we obtain symmetrical eddies both up- and downstream of the obs...

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Veröffentlicht in:Physical review letters 2017-02, Vol.118 (7), p.074506-074506, Article 074506
Hauptverfasser: Soulaine, Cyprien, Quintard, Michel, Baudouy, Bertrand, Van Weelderen, Rob
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Sprache:eng
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Zusammenfassung:We investigate numerically, for the first time, the thermal counterflow of superfluid helium past a cylinder by solving with a finite volume method the complete so-called two-fluid model. In agreement with existing experimental results, we obtain symmetrical eddies both up- and downstream of the obstacle. The generation of these eddies is a complex transient phenomenon that involves the friction of the normal fluid component with the solid walls and the mutual friction between the superfluid and normal components. Implications for flow in a more realistic porous medium are also investigated.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.118.074506