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Description
Optimising the energy performance of systems such as electronic components, solar collectors, and heat exchangers is very important. The use of nanofluids, which consist of solid nanoparticles dispersed in a base liquid, often water, allow the improvement of heat transfer compared to the use of water alone. This work presents a numerical study of the mixed convection of Cu-water, TiO2-water, and CuO-water nanofluids in an inclined square cavity with adiabatic horizontal walls and partially heated vertical walls. We used a numerical code developed in FORTRAN and validated with the work of Sharif and Iwatsu et al. We obtained good agreement between solutions. The objective of this work is to know the effect of nanofluid volume fraction from 0 % to 6 %, partial heating from 20 % to 100 % and inclination angle of cavity from 0° to 30° for Ri = 0. 1, 1 and 10 on heat transfer and fluid flow. Results show that heat transfer increases with increasing partial heating, inclination angle of cavity, and nanofluid volume fraction, especially for the case using Cu-water nanofluids.
Keywords: Mixed convection, Inclination angle, Nanofluid, Partial heating, Finite volume method.
