Computational fluid dynamics and multi-objective response surface methodology optimization of perforated-finned heat sinks

•This study analyses turbulent flow and heat transfer of 3D perforated finned heat sink.•Using CFD and response surface methodology (RSM) methods.•Fins with square perforations in high σ and fins with circular perforations in low σ could achieve exceptional thermal performance.•Optimal condition for the perforated finned heat sink can be attained by considering the values 40,000 and Re=1946.