2born (2born) wrote,

Полет в сверхтекучей жидкости

Симпатичная статейка с формулками и картинками:)

Flying in a superfluid: starting flow past an airfoil: https://arxiv.org/abs/1904.04908

We investigate the development of superfluid flow around an airfoil accelerated to a finite velocity from rest. Using both simulations of the Gross-Pitaevskii equation and analytical calculations we find striking similarities to viscous flows: from the production of starting vortices to the convergence of the airfoil circulation onto a quantized version of the classical Kutta-Joukowski circulation. Using a phenomenological argument we predict the number of vortices nucleated by a given foil and find good agreement with numerics. Finally we analyze the lift and drag acting on the airfoil.

5 pages of main text with 4 figures, 5 pages of supplementary information with 3 figures
Tags: Мегаучебник или Что я читал и похвалил, разгребая arXiv'ы

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