CFD Analysis of Two-Dimensional Non-Newtonian Power-Law Flow Across a Circular Cylinder Confined in a Channel

Transition to periodic unsteady and effects of Prandtl and Richardson numbers on the flow across a confined heated trapezoidal prism

“…Table 6 provides the comparison of drag coefficient and Nusselt number for the confined flow around a cylinder in the steady regime. Exceptional concurrence can be seen between the present results and the values reported in the literature [19][20][21][22] and the maximum deviation can be seen of the order of 0.1 % for drag coefficient and less than 0.3 % for Nusselt number, and hence this validates the present numerical methodology. Extensive details on the forced flow (Ri = 0) of air (Pr = 0.71) around a trapezoidal prism in a channel can be found in our recent study [17] and are not replicated here.…”

“…It has been observed that for a fixed value of the blockage ratio, the size of recirculation region increases with an increase in the Re. This nature is found similar to that of the confined flow across the square [14,15,23], triangular [12] and circular [19][20][21] bluff bodies. For the fixed value of the Re, the size of recirculation region decreases with an increase in the blockage ratio from 12.5 to 50 %.…”

CFD analysis of power-law fluid flow and heat transfer around a confined semi-circular cylinder

“…The confined flow of power-law fluids (0.2 < n < 1.8) was simulated here for Re = 1-40 and for the fixed blockage ratio of 25% [31][32][33][34] at the Prandtl number of 50 [4][5][6]. Additionally, the effects of blockage ratios of 16.67%, 25%, and 50% on the engineering output parameters with varying power-law index at the maximum value of Reynolds number investigated here (Re = 40) were reported.…”

“…However, this rough classification given in [30] is applicable for transition in shear layers, transition in boundary layers and fully turbulent states of flow. Therefore, the detailed flow and heat transfer investigations have been carried here at a blockage ratio of 25% based on the relevant studies in the confined domain [29][30][31][32][33][34].…”

Non-Newtonian power-law flow and heat transfer across a pair of side-by-side circular cylinders

“…1.02%, respectively at Re = 40. In addition, the validation of present solution methodology for steady unconfined Newtonian flow and heat transfer [23], unsteady unconfined non-Newtonian flow [24] and steady confined non-Newtonian flow [24] over a single circular cylinder are available in our recent studies [23,24].…”