Numerical investigation of the hydrothermal performance of novel pin-fin heat sinks with hyperbolic, wavy, and crinkle geometries and various perforations

Abstract

In the current work, pin-finned heat sink applications comprising crucial thermal engineering problems are taken into account. Nonetheless, design optimization is still required. The goal of the study was to fill a gap in the literature by using staggered pin fins using a variety of new combinations of perforation and fin shapes. For the pin-fin arrays under consideration, three-dimensional incompressible flow and heat transport are modeled using the ANSYS Fluent software. With the proper boundary conditions included, all of the governing equations of fluid flow are numerically solved. The turbulence is modeled by a realizable κ-ε model. The Nusselt number (Nu) improved by 47.85% and 50.93% for the elliptical perforated wavy pin fin and wavy perforated crinkle pin fin, respectively, at a Reynolds number of 44502. Approximately 13% pressure drop reduction was seen for an elliptical perforated hyperboloid shape that yields hydrothermal performance factor (HTPF) of roughly 45% compared to the cylindrical case. Also, at Re = 44502, the promising Copper-Diamond composite on a hyperboloid shaped pin fin with elliptical perforation case increased the HTPF by 95%. For a variety of industrial applications, this design can be incorporated.