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Turbulent velocity spectra in superfluid flows
Abstract : We present velocity spectra measured in three cryogenic liquid 4He steady flows: grid and wake flows in a pressurized wind tunnel capable of achieving mean velocities up to 5 m/s at temperatures above and below the superfluid transition, down to 1.7 K, and a "chunk" turbulence flow at 1.55 K, capable of sustaining mean superfluid velocities up to 1.3 m/s. Depending on the flows, the stagnation pressure probes used for anemometry are resolving from one to two decades of the inertial regime of the turbulent cascade. We do not find any evidence that the second order statistics of turbulence below the superfluid transition differ from the ones of classical turbulence, above the transition.
Cited literature [34 references]
https://hal.archives-ouvertes.fr/hal-00508872
Contributor : Philippe-Emmanuel Roche Connect in order to contact the contributor
Submitted on : Friday, December 17, 2010 - 8:55:16 PM
Last modification on : Thursday, March 10, 2022 - 3:58:07 PM
Long-term archiving on: : Friday, March 18, 2011 - 3:32:09 AM
Contributor : Philippe-Emmanuel Roche Connect in order to contact the contributor
Submitted on : Friday, December 17, 2010 - 8:55:16 PM
Last modification on : Thursday, March 10, 2022 - 3:58:07 PM
Long-term archiving on: : Friday, March 18, 2011 - 3:32:09 AM
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Salort_TSF_PoF_2010.pdf
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