Triply resonant penetrative convection
2012 ◽
Vol 468
(2148)
◽
pp. 3804-3823
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Keyword(s):
A thermal convection model is considered that consists of a layer of viscous incompressible fluid contained between two horizontal planes. Gravity is acting vertically downward, and the fluid has a density maximum in the active temperature range. A heat source/sink that varies with vertical height is imposed. It is shown that in this situation there are three possible (different) sub-layers that may induce convective overturning instability. The possibility of resonance between the motion in these layers is investigated. A region is discovered where a very sharp increase in Rayleigh number is observed. In addition to a linearized instability analysis, two global (unconditional) nonlinear stability thresholds are derived.
2016 ◽
Vol 281
◽
pp. 323-342
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Keyword(s):
Keyword(s):
2021 ◽
Vol 88
(1-2)
◽
pp. 08
Keyword(s):
2021 ◽
pp. 095440622110556
Keyword(s):
1992 ◽
Vol 02
(04)
◽
pp. 407-421
2012 ◽
Vol 33
(1)
◽
pp. 48-79
◽
2014 ◽
Vol 132
(1)
◽
pp. 561-581
◽
Keyword(s):
1987 ◽
Vol 39
(1-2)
◽
pp. 57-63
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