• Surendra Agrawal
• Dr. Dinesh Kumar Soni

An two-dimensional computational fluid dynamics (CFD) analysis of a solar absorber plate has been carried out using circular nozzle shaped perforated transverse 900 ribs as artificial roughness on the absorber plate. The relative roughness pitch(P/e= 7.14–17.86), nozzle angle (12, 14, 18, 21 degrees), Reynolds number (Re = 3800–18,000) are chosen as design variables for analysis. A uniform heat flux of 1000 W/m2 is maintained on the surfaceof absorber plate. computational code, ANSYS FLUENT 15.0.0 with renormalization group K-epsilon turbulence model was chosen. An enhancement in Nusselt number and friction factor with decrease in circular relative roughness pitch difference ratio (P/e) is presented and discussed with reference to base paper results. The effect of nozzle shaped perforation and Reynolds number on enhancement of Nusselt number and friction factor is also presented. Optimum configuration of roughness element for artificially roughened solar air heater has been determined in terms ofthermo-hydraulic performance parameter. The nozzle angle of 14° on circular nozzle shaped perforated transverse 900 ribs and circular relative roughness pitch difference ratio of 25 providebest thermo-hydraulic performance of 2.047 consideringthe maximum heat transfer and minimum pressure drop

Computational Fluid, Artificial roughness, Thermo-hydraulic performance parameter, Friction factor

"NUMERICAL INVESTIGATION ON 900 TRANSVERSE NOZZLE SHAPED PERFORATED RIBS WITH DIFFERENT NOZZLE ANGLES AND RIB HEIGHT", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.4, Issue 12, page no.648-655, December-2017, Available :http://www.jetir.org/papers/JETIR1712121.pdf

"NUMERICAL INVESTIGATION ON 900 TRANSVERSE NOZZLE SHAPED PERFORATED RIBS WITH DIFFERENT NOZZLE ANGLES AND RIB HEIGHT", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.4, Issue 12, page no. pp648-655, December-2017, Available at : http://www.jetir.org/papers/JETIR1712121.pdf