New type of centrifugal instability in a thin rotating spherical layer

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Zhilenko , D , Krivonosova , O & Gritsevich , M 2019 , New type of centrifugal instability in a thin rotating spherical layer . in L Shchur (ed.) , INTERNATIONAL CONFERENCE ON COMPUTER SIMULATION IN PHYSICS AND BEYOND . , 012011 , Journal of Physics Conference Series , vol. 1163 , IOP Publishing , Bristol , International Conference on Computer Simulation in Physics and Beyond (CSP) , Moscow , Russian Federation , 24/09/2018 . https://doi.org/10.1088/1742-6596/1163/1/012011

Title: New type of centrifugal instability in a thin rotating spherical layer
Author: Zhilenko, D.; Krivonosova, O.; Gritsevich, M.
Other contributor: University of Helsinki, Department of Physics
Shchur, L
Publisher: IOP Publishing
Date: 2019
Language: eng
Number of pages: 4
Belongs to series: INTERNATIONAL CONFERENCE ON COMPUTER SIMULATION IN PHYSICS AND BEYOND
Belongs to series: Journal of Physics Conference Series
DOI: https://doi.org/10.1088/1742-6596/1163/1/012011
URI: http://hdl.handle.net/10138/303563
Abstract: We numerically model the instability of viscous incompressible fluid flows caused by torsional oscillations of the inner sphere in a thin spherical layer with respect to the state of rest. We show that an increase in the frequency of torsional oscillations leads to a change in the mode of the instability, with a transition from secondary flows in the form of Taylor vortices to the structures, which were not previously observed. The revealed instability is found in the frequency range from 0.61 to 2.45 Hz or, if the wavelengths are taken relative to the layer thickness, from 0.67 to 1.33.
Subject: FLOW
114 Physical sciences
113 Computer and information sciences
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