NUMERICAL INVESTIGATION OF LAMINAR HEAT TRANSFER OF NANOFLUID-COOLED MINI-RECTANGULAR FIN HEAT SINKS

The single- and two-phase models in three-dimensional analysis are applied to study laminar convective heat transfer of nanofluids in a minichannel heat sink. The nanofluids with suspending TiO² nanoparticles of average diameter 21 nm are prepared by ultrasound with a constant nanoparticle concentration of 0.4 vol.% without using surfactants. Experiments are carried out to verify the predicted results. It is shown that the results obtained from the two-phase model are more precise in comparison with the experimental results than those from the single-phase model. The predicted heat transfer coefficients for nanofl uids are higher than those for water
   
Author:  Paisarn Naphon and Lursukd Nakharintr
Keywords:  nanofl uids, convective heat transfer, single- and two-phase models
Page:  666