Determinación de la conductividad térmica del bloque de hormigón utilizado en la construcción ecuatoriana mediante simulación CFD

Abstract

The thermal conductivity of concrete hallows bricks is a parameter not easy to calculate, due to their complex geometry. It is possible to find data for thermal conductivity of blocks from other countries; however, it is not possible to use this data in Ecuador because our blocks have different geometry. For the calculation of the concrete block thermal conductivity, Ansys (Fluent) simulation program is used. The Boussinesq approximation was used to model the variation of the density of the air in the cavities of the block, where the flow was considered as Newtonian, laminar, incompressible flow and non-participating media in radiation. The effect of convection and radiation that occurs in the interior of the block, affects the effective thermal conductivity. A comparison between the different results of three types of common blocks in the country was carried out. The number of cavities affects the effective thermal conductivity of concrete hallow bricks