This work is undertaken as a scientific experiment to test a new design of a
turbulent generator. The current research experiments the influence of novel
vortex generator (VG )inserts on heat transfers within a tube under a
uniform heat flux. A copper tube with a 45 mm inner diameter and 1,350 mm
length is used along with a solid disc injector (swirl generator) that
comprises ten crescent holes with equal circumferential distribution angles
around the disk canter. Subsequently, a swirl flow is generated by deviating
the stream flow 45 degrees causing it to spin in the direction of the axial
flow. Flow directors are on 45? angles toward the axial direction for each
of the crescent holes. This study is an example of flow degradation.
Reynolds numbers (Re). range from 6000 to 13500. Therefore, fluid flow is
treated as a turbulent system. All experiments done with air are regarded as
a power fluid; the Prandtl number is fixed at about 0.71. Thermo-hydraulic
performance of heat exchanger is analyzed. The average heat transfer Nusselt
number is calculated and discussed. The experiment found out that Nusselt
number (Nu) increases with an increase in Re. as well as the number of swirl
generators. At four vortex generators (VGs), the maximum augmentation in
heat transfer is around 4.3 times greater than the plain tube and friction
factor is about 1.28 with 5 VG insets. The results indicate a promising heat
exchanger enhancement in the local petroleum industries.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.