CFD ANALYSIS OF LAMINAR FORCED CONVECTIVE HEAT TRANSFER FOR TiO2/WATER NANOFLUID IN A SEMI-CIRCULAR CROSS-SECTIONED MICRO-CHANNEL

Yıl 2019, Cilt: 5 Sayı: 3, 123 - 137, 14.03.2019

Recep Ekiciler

https://doi.org/10.18186/thermal.540043

Cited By: 16

Öz

In this study, forced
convection flow and heat transfer characteristics of TiO2/water nanofluid flow
with different nanoparticle volume fractions (1.0%, 2.0%, 3.0% and 4.0%) in
semi – circular cross – sectioned micro – channel was numerically investigated.
The three - dimensional study was conducted under steady state laminar flow
condition where Reynolds number changing from 100 to 1000. CFD model has been
generated by using ANSYS FLUENT 15.0 software based on finite volume method.
The flow was under hydrodynamically and thermally developing flow condition.
Uniform surface heat flux boundary condition was applied at the bottom surface
of the micro – channel. The average and local Nusselt number and Darcy friction
factor values were obtained using numerical results. Also, the effects of using
nanofluid on local values of Nusselt number and Darcy friction factor were
investigated. Numerical results indicate that the increasing of nanoparticle
volume fraction of nanofluid, the average Nusselt number increases; however,
there is no significant variation in average Darcy friction factor.

Anahtar Kelimeler

CFD, Semi – Circular Cross – Sectioned Micro – Channel, Forced Convection, Nanofluid

Kaynakça

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