RT Journal Article
ID 75e62ec974be5142
A1 Ismael, Muneer A.
A1 Armaghani, T.
A1 Chamkha, Ali J.
T1 MIXED CONVECTION AND ENTROPY GENERATION IN A LID-DRIVEN CAVITY FILLED WITH A HYBRID NANOFLUID AND HEATED BY A TRIANGULAR SOLID
JF Heat Transfer Research
JO HTR
YR 2018
FD 2018-08-22
VO 49
IS 17
SP 1645
OP 1665
K1 entropy
K1 hybrid nanofluid
K1 mixed convection
K1 lid-driven cavity
AB The use of a hybrid nanofluid is a new strategy of heat transfer enhancement. It is composed of more than one type of nanoparticles suspended in a base fluid. The present study investigates the mixed convection and entropy generation of a Cu-Al_{2}O_{3}-water hybrid nanofluid inside a lid-driven cavity heated by a triangular solid and cooled isothermally from the right vertical wall. The top wall moves in aiding or opposing directions. The studied pertinent parameters are: the thermal conductivity ratio of the triangular solid wall to the base fluid (*K*_{r} = 0.44, 1, 23.8), the Richardson number (Ri = 0.01, 1, 10), and the volume fraction of the hybrid and familiar nanofluids (φ, φ_{Cu}, φ_{Al2O3} = 0.0-5%). The Prandtl number is fixed at 6.26, and the thickness of the solid wall, at 0.5. A uniform up-wind scheme finite difference method is used for numerical solution. The results have shown that the hybrid nanofluid strategy promises in improvement of the economic aspect by reducing the quantity of high thermal conductivity nanoparticles, which usually are more expensive.
PB Begell House
LK http://dl.begellhouse.com/journals/46784ef93dddff27,4868dc7f10d1e249,75e62ec974be5142.html