Rotating Rayleigh-Taylor instability

Scase, MM, Baldwin, KA ORCID: https://orcid.org/0000-0001-9168-6412 and Hill, RJA, 2017. Rotating Rayleigh-Taylor instability. Physical Review Fluids, 2 (2): 024801. ISSN 2469-990X

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Abstract

The effect of rotation upon the classical two-layer Rayleigh-Taylor instability is considered theoretically and compared with previous experimental results. In particular we consider a two-layer system with an axis of rotation that is perpendicular to the interface between the layers. In general we find that a wave mode’s growth rate may be reduced by rotation. We further show that in some cases, unstable axisymmetric wave modes may be stabilized by rotating the system above a critical rotation rate associated with the mode’s wavelength, the Atwood number and the flow’s aspect ratio. We compare our theory with experiments conducted in a magnetic field using ‘heavy’ diamagnetic and ‘light’ paramagnetic fluids and present comparisons between the theoretical predictions and experimental observations.

Item Type:	Journal article
Publication Title:	Physical Review Fluids
Creators:	Scase, M.M., Baldwin, K.A. and Hill, R.J.A.
Publisher:	American Physical Society
Date:	2017
Volume:	2
Number:	2
ISSN:	2469-990X
Identifiers:	Number Type 10.1103/physrevfluids.2.024801 DOI
Divisions:	Schools > School of Science and Technology
Record created by:	Jill Tomkinson
Date Added:	04 Mar 2019 11:12
Last Modified:	18 Sep 2019 10:03
URI:	https://irep.ntu.ac.uk/id/eprint/35887

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