Shukla, V and Brachet, M and Gupta, A and Pandit, R (2015) Mutual-friction coefficients in two-dimensional superfluids: From the Gross-Pitaevskii equation to the Hall-Vinen-Bekharevich-Khalatnikov two-fluid model. In: 15th European Turbulence Conference, ETC 2015, 25-28 August 2015, Delf; Netherlands.
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Abstract
We start from the two-dimensional Gross-Pitaevskii equation (GPE) and develop algorithms for the ab-initio determination of the temperature (T) dependence of the mutual-friction coefficients, α and α�, and the normal-fluid density �n, which appear as parameters in the Hall-Vinen-Bekharevich-Khalatnikov (HVBK) two-fluid model for a superfluid. In the second part of our study, we elucidate the statistical properties of two-dimensional, homogeneous, isotropic superfluid turbulence in the simplified HVBK model, with values for the mutual-friction coefficients that are comparable to those we obtain from the first part of our study. © TU Delft.
Item Type: | Conference Paper |
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Publication: | Proceedings - 15th European Turbulence Conference, ETC 2015 |
Publisher: | TU Delft |
Additional Information: | cited By 0; Conference of 15th European Turbulence Conference, ETC 2015 ; Conference Date: 25 August 2015 Through 28 August 2015; Conference Code:157595 |
Keywords: | Bose-Einstein condensation; Turbulence; Two phase flow, Ab initio; Gross-Pitaevskii equation; Mutual friction; Normal fluids; Statistical properties; Superfluid turbulence; Two fluid model, Friction |
Department/Centre: | Division of Physical & Mathematical Sciences > Physics |
Date Deposited: | 12 Oct 2020 06:40 |
Last Modified: | 12 Oct 2020 06:40 |
URI: | http://eprints.iisc.ac.in/id/eprint/65903 |
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