A numerical study of convective heat transfer from an array of parallel blunt plates

Three-dimensional flow effects on forced convection heat transfer in a channel with stepwise-varying width

“…It is thus of interest to investigate the flow patterns that arise transversely to the channel side walls, where, even in the case of two-dimensional flow [5,6], a characteristic recirculation region is clearly expected immediately downstream of the contraction. .50) respectively.…”

“…The formation of the separation bubble immediately downstream of the leading edge is a feature also encountered in the flow around blunt plates. The studies of Djilali [5] and Rahnema et al [6] were focused on the two-dimensional laminar steady flow around an array of plates and demonstrated two main findings: the linear increase of the separation bubble length with the Reynolds number (for a constant blockage ratio) and the significant heat transfer augmentation in the reattachment region. Marty et al [7] expanded the two-dimensional steady-flow calculations to unsteady flow as well.…”

Numerical study of the interaction among a pair of blunt plates subject to convective drying – A conjugate approach

“…Among them, Djilali [21] and Rahnema et al [22] who studied the effect of blockage on heat transfer phenomena. More specifically, Djilali [21] considered the laminar forced convection in an array of stacked plates.…”

“…The results indicate that the heat transfer augmentation following the leading-edge separation and reattachment is attenuated at higher blockage ratios, due to the reduction of the separation bubbles size. Rahnema et al [22] conducted a numerical study of convective heat transfer from an array of parallel blunt plates. It was found that blockage enhances heat transfer due to the reduction of the separation bubble size and that Nu approaches a maximum close to the reattachment point.…”

Effect of secondary flows due to buoyancy and contraction on heat transfer in a two-section plate-fin heat sink

“…Two basic configurations of flow-contraction, usually found in heat dissipation applications, are the forward facing step and flow entrance into an array of parallel fins, with the latter having been primarily investigated under forced convection conditions and using air as the cooling medium [7][8][9]. However, few studies are available in the open literature that discuss the effect of buoyancy on heat transfer in such configurations.…”