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In the present study, a numerical investigation is conducted to observe the effect of forced convection heat transfer for various innovative shaped pin fin heatsink designs by altering the effect of various parameters on the fluid domain and the solid domain. The study illustrates the possible configuration of such heat sink design implementing Twisted and Grooved shaped innovative pin fins. Different perforation shapes and alignments are applied to extend the surface area resulting in increased heat transfer rate and hydrothermal performance factor (HTPF). Navier-Stokes's equations and RANS (Reynolds Averaged Navier-Stokes) based k − ε turbulence model govern the modeling of the study. Compared to available recent literature, the HTPF has increased by about 9% for Grooved Circular perforated pin fin at Reynolds number (Re) = 21367. The results showed an improvement of the average Nusselt number (Nu) by 32%. The grooved-shaped circular perforated heat sink has been observed with an improved HTPF of about 27% from the baseline case. Also, the Cu-Diamond composite on grooved circular perforated pin fin has shown improvement in HTPF by 33% at Re = 21367. Pressure drop has also been observed to be lowest in the case of the grooved fin with circular perforations. Hence, this design significantly benefits the HTPF. [ABSTRACT FROM AUTHOR]

There is a desire to improve the forced convection heat transfer for various innovative shaped pin fin heatsink designs. Hence, a numerical investigation is conducted to observe the effect of convection heat transfer for various shaped pin fin heatsinks by changing various parameters on fluid and solid domains. Different shapes of perforations and bulges are added to create more surface area and flow pattern change. Several pin fin configurations are proposed for the design to increase the performance. Navier-Stokes's equations and RANS (Reynolds Averaged Navier-Stokes) based k − ε turbulence model governs the study's modeling. The investigations are performed using the CFD program for Reynolds numbers (Re) ranging from 8547 to 21,367. The results reveal that elliptical shape pin fins play a crucial role in enhancing hydro-thermal performance factor (HTPF). The circular perforated elliptical pin fin provides a maximum HTPF of 1.72 as the Re changes from 8547 to 21,367. A performance improvement of 56% to 72% is found, which merits consideration in the pin fin heatsink design. Furthermore, the heat transfer performance for the elliptical-shaped circular perforation pin fin is examined using copper-diamond composite material. The Cu-diamond composite has a maximum HTPF of 1.75 at a Reynolds number of 21,367. [ABSTRACT FROM AUTHOR]