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 TiO 2  nanoparticles of average diameter 21 nm are  prepared  by  ultrasound  with  a  constant  nanoparticle  concentration  of  0.4  vol.  %  without  using  surfactants.  The  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 nanofluids are higher than those for water.
Автор:  Paisarn Naphon, Lursukd Nakharintr
Ключевые слова:  nanofluids, convective heat transfer, single- and two-phase models
Стр:  642