Effects of Geometrical Parameters on Natural Convective Heat Transfer From Vertically-Mounted Rectangular Interrupted Fins

Abstract

Steady-state external natural convection heat transfer from vertically-mounted rectangular interrupted fins is investigated numerically and experimentally. To perform an experimental study, a custom-designed testbed was developed to verify the analytical and numerical results. FLUENT software was used in order to develop a 2-D numerical model for investigation of interruption effects. After regenerating, and validating the existing analytical results for fin spacing, a systematic numerical and experimental study was conducted on effect of fin interruption. Results show that adding interruptions to vertical rectangular fins enhances the thermal performance of fins. In a parametric study optimum interruption length for maximum fin performance was found and correlated.

Numerical investigation of hydrothermal performance over perforated conical pin heat sinks

“…As the size of an electronic device decreases, its thermal power losses increase. 2,3 Forced convection of heat sinks is employed in many industrial applications to prevent overheating and subsequent damage. The demand for new heat sink designs is becoming a serious concern in today's world with the introduction of new components generating increasing amounts of heat dissipation.…”

“…Since nearly all applications, such as electronic cooling systems, cooling of gas turbine blades, internal combustion IC engines, and various other applications, 1 require operation within specific temperature ranges, devices generating excessive heat as a by‐product of power dissipation can quickly overheat and fail. As the size of an electronic device decreases, its thermal power losses increase 2,3 . Forced convection of heat sinks is employed in many industrial applications to prevent overheating and subsequent damage.…”