Buoyancy-induced transitional flows around an enclosed horizontal cylinder: An experiment

Three-dimensional flow instability of natural convection induced by variation in radius of inner circular cylinder inside cubic enclosure

“…And results obtained by the present code were compared to those obtained by Fiscaletti et al [13]. Figure 2 shows the surface-averaged Nusselt number on the cylinder surface as a function of the Rayleigh number in the range of 1.5×10 6 ≤Ra≤8×10 6 .…”

“…The preliminary numerical simulations on the natural convection problem considered by Fiscaletti et al [13] were conducted to validate the present numerical simulation code. And results obtained by the present code were compared to those obtained by Fiscaletti et al [13].…”

Three-dimensional natural convection around an inner circular cylinder located in a cubic enclosure with sinusoidal thermal boundary condition

“…The previous numerical analysis on the natural convection phenomenon considered by Fiscaletti et al [22] was conducted to verify the present numerical methodology and simulation code. The results obtained by the present code were compared to those obtained by Fiscaletti et al [22].…”

Numerical optimization of unsteady natural convection heat transfer from a pair of horizontal cylinders

“…Previous experimental studies by some of the co-authors [10,11] and Grafsronningen and Jensen [12,13] confirm either positive or negative enhancement of the upper cylinder's heat transfer, depending on the spacing between the two cylinders. Stafford and Egan [14] report an optimum spacing of = 4 in the laminar flow regime, for 10 4 ≤ ≤ 10 5 . The oscillation of the thermal plume has been investigated by Fiscaletti et al [14] and Kuehner et al [15,16] for a single cylinder.…”

“…Stafford and Egan [14] report an optimum spacing of = 4 in the laminar flow regime, for 10 4 ≤ ≤ 10 5 . The oscillation of the thermal plume has been investigated by Fiscaletti et al [14] and Kuehner et al [15,16] for a single cylinder. Numerical studies report oscillations in the case of a pair of cylinders [17,18].…”