RT Journal Article
ID 1f0c020242082edc
A1 Dong, Shuangling
A1 Zheng, Liancun
A1 Zhang, Xinxin
A1 Zhang, Junhong
T1 HEAT TRANSFER ENHANCEMENT IN MICROCHANNELS BY UTILIZING THE Al2O3−WATER NANOFLUID
JF Heat Transfer Research
JO HTR
YR 2012
FD 2012-12-28
VO 43
IS 8
SP 695
OP 707
K1 nanofluid
K1 microchannel
K1 heat transfer
K1 MEMS
K1 forced convection
K1 finite element method
AB Heat transfer enhancement by utilizing nanofluids in a microchannel flow is investigated for specific flow regimes and boundary conditions. Accompanied with the slip velocity and jump temperature boundary conditions, the governing mass, momentum, and energy equations for a
nanofluid flow inside a microchannel have been discretized using the characteristic finite element method. The above equations are improved and solved taking into account the particle dispersion and anomalous diffusion due to the particle random motion. Based on theoretical models and experimental correlations, the thermal conductivity and viscosity coefficients required for simulation were used. Based upon numerical simulations, the effects of Reynolds number and the volume fraction of nanoparticles on heat transfer from the channel walls are presented. Simulated results shows reasonably good agreement with the previous numerical and experimental data. An obvious increase in the averaged Nusselt number is found for the nanofluid. The results provide insight into the statement that nanoparticles can increase the rate of heat transfer in microchannels.
PB Begell House
LK https://www.dl.begellhouse.com/journals/46784ef93dddff27,28e6d2647e519080,1f0c020242082edc.html