Numerical analysis of periodic 3D convective heat transfer in fenestration with between-the-glass louvered blinds

A three-dimensional unsteady laminar natural convection in fenestration with between-the-glass louvered blinds. The considered system is a 3D vertical cavity with differentially heated vertical walls and with rotatable louvered blinds located exactly midway between the walls. The temperature imposed to the hot wall is periodic to be closer to real conditions. The effects of, louvered blinds inclination, thermal conductivity ratio, period and Rayleigh number on the temperature field, flow structure and heat transfer were examined.