Starting Flow Past an Airfoil and its Acquired Lift in a Superfluid

Musser, Seth, Proment, Davide, Onorato, Miguel and Irvine, William T.~M. (2019) Starting Flow Past an Airfoil and its Acquired Lift in a Superfluid. Physical Review Letters, 123 (15). ISSN 0031-9007

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We investigate superfluid flow around an airfoil accelerated to a finite velocity from rest. Using simulations of the Gross–Pitaevskii equation we find striking similarities to viscous flows: from production of starting vortices to convergence of airfoil circulation onto a quantized version of the Kutta-Joukowski circulation. We predict the number of quantized vortices nucleated by a given foil via a phenomenological argument. We further find stall-like behavior governed by airfoil speed, not angle of attack, as in classical flows. Finally we analyze the lift and drag acting on the airfoil.

Item Type: Article
Additional Information: Early Title: Flying in a superfluid: starting flow past an airfoil
Uncontrolled Keywords: physics - fluid dynamics,condensed matter - quantum gases,physics - computational physics
Faculty \ School: Faculty of Science > School of Mathematics
Depositing User: LivePure Connector
Date Deposited: 24 Sep 2019 08:30
Last Modified: 10 Nov 2021 07:23
DOI: 10.1103/PhysRevLett.123.154502

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