• Jouhri Kumar Akale
• Dr. S.K. Nagpure

In a Computational Fluid Dynamics (CFD), the trial has been conducted on the heat transfer and friction factor, for a solar air heater with Circular ribs with different relative gap width. In the CFD investigation it was assumed that, the rib height is 2mm, the pitch of the rib (P) is 20, the Relative Roughness pitch (P/e) is 10, and the angle of attack (α) is 60°. This investigation was carried out on a Reynolds Number ranging in between 3000-15000. When the desired heat transfer was carried with smooth and rough ribs with symmetrical gaps it was found that; The smooth ribs could not transfer the desired heat due to absence of friction; so, they are not preferred practically. The rough ribs were efficient enough to transfer the desired heat, but they are not economical and are very complex in design and construction. Whereas, the Circular ribs with different relative gap width gives more area of contact. So, there is enough time to transfer the heat from the ribs to the passing air which touches the ribs and the heat transfer takes place efficiently. Thus, the Circular ribs with different relative gap width, when compared with the smooth and rough ribs with symmetrical gaps, it was concluded that the related Nusselt Number and Friction Factor for Circular ribs with different relative gap width was more efficient as well as economical, than that of smooth and rough ribs with symmetrical gaps for flow Reynolds Number.

Keywords —CFD Analysis, FLUENT, GAMBIT, Solar Duct, Friction factor, and Nusselt number.

"COMPARISION OF V-RIB SOLAR ABSORBER PLATE WITH DIFFERENT RELATIVE GAP WIDTH ON EXPERIMENTAL AND CFD SIMULATION", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.4, Issue 4, page no.118-125, April-2017, Available :http://www.jetir.org/papers/JETIR1704029.pdf

"COMPARISION OF V-RIB SOLAR ABSORBER PLATE WITH DIFFERENT RELATIVE GAP WIDTH ON EXPERIMENTAL AND CFD SIMULATION", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.4, Issue 4, page no. pp118-125, April-2017, Available at : http://www.jetir.org/papers/JETIR1704029.pdf