Flow and heat transfer characteristics over a square cylinder with corner modifications

Vortex Shedding Suppression: A Review on Modified Bluff Bodies

“…The lift reduction was considerably greater for the diamond orientation. The cut corner modification on the front sharp corners of the square cylinder is another effective method for flow structure alteration and drag reduction [38][39][40][41][42][43]. Kurata and Ueda [41] conducted several experiments to investigate the flow past a rectangular cylinder and effects of small rectangular shaped cut-corners at the front edges on the drag.…”

“…The recirculation flow in the cut-corner facilitates the flow to go around the corner by acting as a virtual shape. On the quest to understand the effects of the corner modification on the flow past square cylinder Ambreen and Kim [38] conducted a more universal study on all proposed modifications namely chamfered, rounded and cut corners. Ambreen and Kim [38] investigated corner modification effects on flow structure and heat transfer in the wake region of the square cylinder.…”

“…On the quest to understand the effects of the corner modification on the flow past square cylinder Ambreen and Kim [38] conducted a more universal study on all proposed modifications namely chamfered, rounded and cut corners. Ambreen and Kim [38] investigated corner modification effects on flow structure and heat transfer in the wake region of the square cylinder. The numerical study focused on the corner roundedness parameter c/D = 0.125 where c and D represent the corner size and cylinder diameter, respectively.…”

Effect of Corner Modification on Forced Convection and Properties of Flowing Fluid Past Static Equilateral Triangular Prism at Various Reynolds Numbers

“…Also, a direct relationship between corner roundness and reduction in instability was observed. Ambreen and Kim [3] numerically observed the decrease in coefficient of drag and amplification of heat transfer properties at 55≤Re≤200, when corners of square prism was modified to rounded, chamfered and recessed corners. Daemei and Eghbali [4] numerically proved 50% reduction in wake region by modifying the corners of a triangular building to rounded, chamfered and recessed corners subjected to air cross flow.…”

Stokes flow and heat transfer past a circular cylinder in a square cavity with suction/injection on opposite-side walls

“…These problems of heat transfer and fluid flow were studied by many researchers by numerical methods in different situations such as (i) a square obstruction is placed asymmetrically between two sliding walls [6], (ii) natural convection between a hot horizontal cylinder placed in a square cavity [7], (iii) a horizontal cylinder is placed inside a rectangular enclosure [8], (iv) flow about a square cylinder [9], by using two numerical methods: FVM and lattice Boltzmann method. (v) the effects of grid resolution on simulations of large-eddy due to the flow about a circular pipe [10], (vi) the heat transfer in between the concentric and eccentric horizontal cylinders [11], (vii) natural convection is generated due to the temperature difference between a hot circular cylinder placed inside a cold square cavity [12], (viii) unsteady flow problem of power law fluid about a lengthy square tube [13], (ix) natural convection when the surface of circular cylinder is subjected to an uniform heat source within a square enclosure filled with air [14], (x) the flow past rectangular cylinders [15], (xi) the turbulent flow about a square tube [16], (xii) viscous flow past a primary circular cylinder is surrounded by smallmultiple control rods [17], (xiii) uniform flow past thorn (triangular solid) fixed to a square tube [18] and (xiv) the effects of corner modifications on the viscous flow and heat transfer about a square cylinder [19]. In recent times, powerful numerical methods like (i) immersed boundary methods are applied to heat flux boundary problems [20] and (ii) rotating hot cylinders in a cold square enclosure [21].…”