LAUSR

Convective heat transfer of alumina–water nanoliquid within a rotating square cavity with left border sinusoidal temperature is studied numerically. The considered region is a rotating square enclosure having constant temperature boundary condition at $$ \bar{x} = L $$x¯=L, while temperature of the border $$ \bar{x} = 0 $$x¯=0 is changed as a sinusoidal function of coordinate, other walls are adiabatic. Dimensionless control equations formulated using stream function, vorticity and temperature, have been solved by the finite difference method of the second-order accuracy. The effects of Rayleigh number, Taylor number and nanoparticles volume fraction on fluid flow and heat transfer have been analyzed. It has been found that for low values of Ra a growth of nanoparticles concentration leads to the thermal transmission enhancement, while high values of Ta characterize also the intensification of thermal transmission with the nanoparticles concentration. At the same time, convective nanoliquid flow rate decreases with growth of Ta.