Heat transfer enhancement in Rayleigh-Bénard convection of liquids using suspended adiabatic honeycombs
Laminar natural convection of water inside box-shaped enclosures heated at the bottom and cooled at the top, with perfectly insulated sidewalls, is studied numerically with the aim to investigate the enhanced heat transfer effects deriving from the suspension of an adiabatic square honeycomb in the middle of the enclosure so as to leave an upper and a lower clearance allowing for horizontal flows. A computational code based on the SIMPLE-C algorithm is used to solve the system of the mass, momentum and energy transfer governing equations.