An influence of a spatial temperature modulation of the heat release/consumption at the interface on nonlinear convective flows in the 47v2 silicone oil-water system, has been investigated. Periodic boundary conditions on the lateral walls, corresponding to an infinite two-layer system, have been considered. Transitions between the flows with different spatial structures, have been studied. It is shown that the spatial modulation can change the sequence of bifurcations and lead to the appearance of new oscillatory regimes. Specifically, pulsating traveling waves changing the direction of propagation, as well as regimes corresponding to period doubling, period-four and period-eight bifurcations, have been obtained. (C) 2019 Elsevier Masson SAS. All rights reserved.
Nonlinear dynamics of a two-layer system under the action of spatial temperature modulation of an interfacial heat release
Viviani A.
;
2019
Abstract
An influence of a spatial temperature modulation of the heat release/consumption at the interface on nonlinear convective flows in the 47v2 silicone oil-water system, has been investigated. Periodic boundary conditions on the lateral walls, corresponding to an infinite two-layer system, have been considered. Transitions between the flows with different spatial structures, have been studied. It is shown that the spatial modulation can change the sequence of bifurcations and lead to the appearance of new oscillatory regimes. Specifically, pulsating traveling waves changing the direction of propagation, as well as regimes corresponding to period doubling, period-four and period-eight bifurcations, have been obtained. (C) 2019 Elsevier Masson SAS. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
