https://doi.org/10.1140/epjp/s13360-025-06806-y
Regular Article
Coriolis-induced modifications to thermosolutal instability in Navier–Stokes–Voigt fluids
Department of Mathematics, PES University, 560 085, Bangalore, India
Received:
30
July
2025
Accepted:
26
August
2025
Published online:
11
September
2025
The competing influences of rotation-induced Coriolis force and solutal buoyancy on thermal convection in a Navier–Stokes–Voigt fluid layer are investigated. Analytical expressions are derived for the thresholds of both stationary and oscillatory instabilities. A notable outcome is the emergence of closed oscillatory neutral curves, detached from the stationary branches under certain parameter regimes. Unlike the conventional single-threshold criterion, these curves necessitate three distinct thermal Rayleigh numbers to fully delineate the stability boundary. The analysis further reveals instability behaviors not previously reported in either thermosolutal convection or rotating thermal convection of Kelvin–Voigt fluids. Interestingly, under specific parametric conditions, rotation and a stabilizing solute gradient—each suppressing convection in isolation—can together hasten the onset of oscillatory instability, thereby uncovering a counterintuitive destabilizing interaction. The Kelvin–Voigt elasticity parameter exerts an additional decisive influence, alternately amplifying or mitigating instability depending on the regime. The established results for thermosolutal convection and rotating thermal convection are recovered in the appropriate limiting cases.
The original online version of this article was revised: " In this article, two equations (9 and 42) were incorrectly formatted. The original article has been corrected.
A correction to this article is available online at https://doi.org/10.1140/epjp/s13360-025-06999-2.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2025
corrected publication 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
