Thermal behavior of air-fluid in triangular cavities of 3D printed concrete walls

Resumo

The civil construction industry has shown increasing interest in 3D printing technology due to its ability to produce highly complex structures with different internal wall geometries using concrete as the raw material. With the advancement of technology, the use of numerical modeling software has become necessary to simulate heat transfer and the thermal performance of objects developed through 3D printing. The objective of this work is to simulate heat transfer in a wall geometry obtained by 3D printing, featuring triangular cavities filled with air, and to compare the results using two different approaches. Initially, computational simulation with air voids in a wall as solid elements will be presented using DIANA FEA software, and subsequently, the air voids will be treated as a fluid using OpenFOAM software. The comparison between the two simulations will be presented, highlighting the influence of modeling air voids on the thermal properties of 3D-printed structures.