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velocity field in a superfluid turbulence box
picture above : velocity field in a superfluid turbulence box (vapor visualization freeware)

 

Superfluid Turbulence : Numerical simulations on supercomputers

 

 

Images

 

Images of quantum / superfluid turbulence (for animations / videos, click here)

 

 

Results

 

 

spectre
Spectra of velocity in superfluid turbulence with evindence of bottlenecking at low temperature in DNS simulation of the two-fluid model truncated at a scale corresponding to the inter-vortex spacing. (see EPL 2011)

 

 

 

snapshot
Snapshots : normal versus superfluid components
For animations / videos, click here

 

 

 


Kinematic Energy of the superfluid (left) and normal fluid (right)locked by mutual friction
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Partners

 

This work is done in collaboration with Emmanuel Leveque from the ENS Lyon. Our first steps in this field were initiated thanks to an original idea of Carlo Barenghi from the University of Newcastle, UK (see our EPL 87:54006 [2009] ).

 

The CPU ressources are provided by the CINES/GENCI and by the PSMN.

 

 

For more information

 

For additionnal information, see

Energy cascade and the four-fifths law in superfluid turbulence
Salort J. , Chabaud, B., Lévêque, E. and Roche P.-E.
EPL 97:34006 (2012)
download - Link to Publisher - hal-00635578 - arxiv:1202.0710


Mesoscale Equipartition of kinetic energy in Quantum Turbulence
Salort J. , Roche P.-E. and Lévêque, E.
EPL 94:24001 (2011)
download - Link to Publisher - hal-00586900 - arxiv:1202.0579

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VASE
Ph.R. Jan, 2012