Numerical study of turbulent natural convection of nanofluids in differentially heated rectangular cavities

In this work we study numerically the turbulent natural convection of nanofluids (water + Al2O3/NTC/Cu) in rectangular cavities differentially heated. The objective is to compare effect macro-structural aspect cavity and types studied on thermal exchange by type geometry. Therefore, have treated cases these three nanofluids, for different particles volume fractions (0 ? 0.06) form ratios cavity. standard k-? turbulence model used take into account effects turbulence. governing equations are discretized finite method using power law scheme which offers a good stability characteristic flow. results presented streamlines isothermal lines. variation average Nusselt number calculated as function nanoparticles, theirs fractions, cavity, Rayleigh numbers. show that greater ratio large use CNT suspension water prevails voluminal