Thermal analysis of heat transfer with different fin geometry through straight plate-fin heat sinks

Abstract

The benefits of using straight parallel -fin heat sinks with add and subtract fins are study by utilizing experimental and Computational simulation methods. Three-dimensional numerical simulations with different parameters were studied. Numerical simulations studied two types of straight plate fins: first model is straight plate-add fin heat sinks and second model is straight plate-subtract fin heat sinks. Experiments are studied with three shapes for the same dimensional numerical simulations: straight plate, straight with add semicircular and straight with subtract semicircular fin in turbulent forced-convection for Reynolds number in the range of 6300–35,120 and heat flux 1194–23353 W/m2. It is noticed from results that heat transfer coefficient show a good agreement between numerical simulation and experimental tests and increases at about (38%, 43%) for straight with added semicircular and straight with subtract semicircular fins when compared with straight than other shapes fins. Additionally, Nusselt number increases at about (21% and 32%) for straight with added semicircular and straight with subtract semicircular fins when compared with straight than other shapes fins.