Numerical Simulation and Holographic Visualization of Double Diffusive Convection in a Horizontal Concentric Annulus

Double-diffusive convection for a heated cylinder submerged in a salt-stratified fluid layer

“…From Fig. 9, it is found that the heat transfer characteristics of doublediffusive convection are between natural convection and conduction, as also shown in [13]. The averaged Nusselt number ®rst decreases sharply and then the decrease is more gradual.…”

“…From the contours before and after s 0X015, it is shown that the vortices generated around the lower half of the cylinder develop sooner than that at the upper half, and that they are smaller at the lower part of the cylinder, even though the heat effect is more obvious at the upper half part of the cylinder. This results from the different [13]. Times are at t 90s and t 120s, respectively effects of the salinity gradient prior to the onset of stability, as depicted in [8,9].…”

“…In order to test the numerical method, the case of doublediffusive convection in a concentric cylinder was carried out. The comparison with the numerical and holographic interferometry results in [13] is shown in Fig. 2.…”

“…They clearly describe the transport mechanism of all the types of layers. Dosch and Beer [13] numerically simulated the double-diffusive convection in a horizontal concentric annulus. Experiments on holographic visualization were also conducted in which they examined the third type of layer but the plume convection was not signi®cant in their studies.…”

Inner cylinder diameter effects on free convection heat transfer in a stable stratified fluid

“…However, most of the studies reported so far are focused on the behavior of the cellular convection, and the number of experimental [7][8][9][10] and theoretical studies [11][12][13][14][15] on this issue is quite large. Few studies have been performed on the heat transfer, which is important in practical cases as described above.…”