Fig. 1. Sketch of the two-dimensional convection model

Fig. 2. (a) Bifurcation diagram for . (b) close-up view of the part of the bifurcation diagram delimited by the straight dashed lines depicted in (a). Where SOC represents the SOC solutions with n rolls

Fig. 3. (a) Spatio-temporal structure, (b) the time series of and (c) power spectral density for

Fig. 4. The time series of the vertical velocity w at two monitoring points (a) and (b) for

Fig. 5. Comparison of the lateral profiles and concentration fields between the Blinking and LTW states at : (a) The lateral profile and (c) concentration field of the Blinking state; (b) The lateral profile and (d) concentration field of the LTW state

Fig. 6. The variation of (a) blinking frequency and (b) oscillation frequency as a function of the Rayleigh number

Fig. 7. The variation of of the Blinking and LTW states as a function of r. (b) Close-up view of the part delimited by the straight dashed lines depicted in (a)

Fig. 8. Structures of the flow field of LTW state: (a) Spatio-temporal structure; (b) a large-scale concentration current; (c) a transient structure of the concentration field

Fig. 9. The spatio-temporal development and transient structures of the flow field at typical times for

Fig. 10. The variation of (a) , M, and (b) the vertical velocity at the monitoring points for

Fig. 11. The structure of flow field for the SOC state at : (a) The lateral profile on the horizontal centerline of the cavity; (b) the streamlines and the structure of the associated temperature field; (c) the structure of the concentration field

Fig. 12. The variation of with r for the SOC state