• Naveen Kumar
• Santosh A Bellad
• Sartaj Patel
• K Ganesh

In this paper work, numerical analysis of heat transfer flow characteristics using Delta wing vortex generator in fin and tube oval heat exchanger has been presented. Heat transfer 3D numerical model has been developed and successfully carried out. The fin-and-oval heat exchanger with punched delta wings for a range of 500 ≤ Re ≤ 2500. The influences of the punched angle 450, flow directions, wing tips pointing downstream and upstream of pitch ratio 2 is investigated. The numerical results showed that in the range of the present study, the variation of these parameters can result in the increase of heat transfer. The study focuses on the Influence of the different parameters of Vortex Generators on heat transfer and fluid flow characteristics. The characteristics of average Nu number and friction coefficient are studied numerically by the use of the computational fluid dynamics (CFD) commercial code of FLUENT ANSYS 14. The results show that the use of the punched delta wings in the fin-and-oval-tube heat exchanger leads to an enhancement in the heat transfer and friction as compared to the plain fin for all cases (Nu/Nu0 and f/f0 higher than 1) with the increasing of Re number. It has been observed that the overall Nu number of oval tubes increasing by 20.33%, 30.78%, 38.89%, 46.26% and 54.92% with angle of 450 and Re numbers 500, 1000, 1500, 2000 and 2500.

Fin oval tube Heat Exchanger, CFD, Nusselt Number, Heat transfer etc.

"NUMERICAL INVESTIGATION ON TURBULENCE EFFECTS OF DELTA WING VORTEX GENERATORS ON THERMAL PERFORMANCE OF OVAL FIN HEAT EXCHANGER", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 12, page no.150-154, December-2018, Available :http://www.jetir.org/papers/JETIR1812422.pdf

"NUMERICAL INVESTIGATION ON TURBULENCE EFFECTS OF DELTA WING VORTEX GENERATORS ON THERMAL PERFORMANCE OF OVAL FIN HEAT EXCHANGER", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 12, page no. pp150-154, December-2018, Available at : http://www.jetir.org/papers/JETIR1812422.pdf