EXPERIMENTAL STUDY FOR STAGGERED PERFORATED ARRAY OF PINS LIKE FINS IN A RECTANGULAR AIR CROSS FLOW | ||
| Iraqi journal of mechanical and material engineering | ||
| Article 1, Volume 14, Issue 2, June 2014, Pages 261-275 | ||
| Authors | ||
| Ahmed Qasimb; Ali Shakir Baqira; Anmar Adnanb | ||
| Abstract | ||
| This paper investigated experimentally the friction factor reduction and heat transfer enhancement processes over staggered perforated pin fins in a rectangular channel with air cross flow. The channel had a duct cross section width of 62 mm, cross section depth of 167 mm and duct length of 1200 mm. The experiment covers the following ranges: Reynolds number 28000-113000, and pin fin shapes (solid, horizontal/vertical (HV) perforation and horizontal/vertical/lateral (HLV) perforation). Results show that the Nusselt numbers of pins with horizontal/vertical (HV) perforations are about 11% higher than those for solid pins and with horizontal /vertical/lateral (HLV) perforations are about 21% higher than those for the solid pins.. In addition, experimental results show that pins with horizontal/vertical/lateral (HLV) perforations, have good enhancement of heat transfer in addition to a significant reduction in weight compared with solid pin case performance. | ||
| Keywords | ||
| Perforated pin fins; Heat sink; Heat transfer enhancement; thermal efficiency; Pressure drop; fin performance and thermal resistance | ||
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