RT Journal Article
ID 6d16224a1b215284
A1 Dagdevir, Toygun
A1 Keklikcioglu, Orhan
A1 Ozceyhan, Veysel
T1 THE EFFECT OF CHAMFER LENGTH ON THERMAL AND HYDRAULIC PERFORMANCE BY USING Al_{2}O_{3}-WATER NANOFLUID THROUGH A SQUARE CROSS-SECTIONAL DUCT
JF Heat Transfer Research
JO HTR
YR 2019
FD 2019-07-15
VO 50
IS 12
SP 1183
OP 1204
K1 heat transfer enhancement
K1 thermal and hydraulic performance
K1 Al_{2}O_{3}â€“water nanofluid
K1 chamfer length
AB The effect of chamfer length c and nanoparticle volume fraction q on heat transfer and fluid flow is investigated numerically for water-Al_{2}O_{3} nanofluid flow through various chamfered ducts of square cross section. A mixture model is used for the nanofluid flow analyses based on the finite volume method. Chamfer lengths of the ducts are assumed to be 1.0, 2.0, 3.0 and 4.0 mm; and the volume fraction of Al_{2}O_{3} nanoparticles, where diameter is 10 nm, are considered as 0.01, 0.02, and 0.03. The fluid flow is examined under turbulent flow conditions (4000 ≤ Re ≤ 10,000). The results show that as the nanoparticle volume fraction increases, heat transfer and pressure drop increase in all the cases considered. Moreover, increasing the chamfer length of the duct has a positive effect on convective heat transfer, despite the negative effect on the pressure drop. The highest thermohydraulic performance is obtained as 1.118 for the case of *c* = 4 mm, φ = 0.03, and Re = 4000.
PB Begell House
LK http://dl.begellhouse.com/journals/46784ef93dddff27,7f37ee020fed19d8,6d16224a1b215284.html