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The effect of viscosity on the rotating waves and polygonal patterns within a hollow vortex core

Title:

The effect of viscosity on the rotating waves and polygonal patterns within a hollow vortex core

Ait Abderrahmane, Hamid, Fayed, Mohamed, Ng, Hoi Dick and Vatistas, Georgios H. (2017) The effect of viscosity on the rotating waves and polygonal patterns within a hollow vortex core. Experimental Thermal and Fluid Science, 87 . pp. 104-108. ISSN 0894-1777

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Official URL: https://doi.org/10.1016/j.expthermflusci.2017.04.0...

Abstract

The question of how viscosity influences the development of instabilities within a rotating shallow layer of liquid, which gives rise to polygonal patterns, has been investigated experimentally. A phase diagram of the existence regions of these polygonal patterns is constructed in plane, where Fr is the Froude number and Ta is the Taylor number. The results show that the effect of the viscosity on the domain of existence of the patterns depends on the initial fluid height above the rotating disc. The results also show that the variation of viscosity does not affect the locking ratio between the rotational frequencies of the pattern to the disc; the two frequencies remain locked at approximately 1/3.

Divisions:Concordia University > Gina Cody School of Engineering and Computer Science > Mechanical, Industrial and Aerospace Engineering
Item Type:Article
Refereed:Yes
Authors:Ait Abderrahmane, Hamid and Fayed, Mohamed and Ng, Hoi Dick and Vatistas, Georgios H.
Journal or Publication:Experimental Thermal and Fluid Science
Date:2017
Digital Object Identifier (DOI):10.1016/j.expthermflusci.2017.04.021
ID Code:990811
Deposited By: Hoi Dick Ng
Deposited On:23 Sep 2022 17:13
Last Modified:23 Sep 2022 17:13
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