Akademik Veri Yönetim Sistemi
9TH INTERNATIONAL CONGRESS ON SCIENTIFIC RESEARCH AND INNOVATION, Venice, İtalya, 28 - 29 Eylül 2024, ss.187-197
Rapid developments in various industries have triggered scientists, engineers
and researchers to improve the performance and efficiency of heat transfer
systems. Therefore, continuous research is being carried out to increase heat
transfer performance and as a result, it is aimed to use more efficient heat
exchangers and cooling systems. In this study, the effects of angled V-shaped
turbulators placed in a circular shaped pipe under turbulent flow conditions on
heat transfer and friction factor were investigated. Water was used as the
working fluid. The analyses were carried out under turbulent flow conditions in
the range of Re = 12427 - 20712. Initially, analyses of the circular shaped
test pipe were performed. The obtained empty pipe results were compared with
the correlations accepted in the literature. Then, the pipe analyses with 10o
angled V-shaped turbulators placed in the test pipe were examined. According to
the obtained results, the effects of V-shaped turbulators on heat transfer,
friction factor and thermal performance were examined. According to the
obtained results, the graphic curves obtained in all turbulent cases were
obtained above the empty pipe graphic curves. For increasing Reynolds number
due to increasing fluid flow rate, Nusselts number values increased while
friction factor values decreased. The presence of 10o angled V
shaped turbulators in the test pipe increased heat transfer and friction factor
with increasing fluid contact surface area. Maximum Nusselts increase rate
compared to empty pipe increased by 15.04% at Re=15876. Maximum friction factor
increase compared to empty pipe was 87.95% at Re=20712. While the lowest TPF
value was 0.913 at Re=12427, it was concluded that the highest TPF value was
0.933 for Re=15876.