Abstract
The aim of this work is the study of the thermal flux through a multilayer insulation specimen, whose final panels could be designed for the green building field. The specimen was fabricated using an expanded styrofoam base, the mortar and milk cements, a fiberglass, and hemp fibers chopped and scattered into a surface smoothing. The dimensions of the specimen are 230 x 75 x 30.2 [mm]. The need to analyze a reduced surface in the development of a 3D visualization follows a computational aspect, i.e., to limit the number of degrees of freedom to be solved. Specifically, the research is focused on a comparative analysis among numerical simulations through the data processing by means of Matlab® - using the finite difference method (FDM) in the 1D domain -, and Comsol Multiphysics® - using the finite element method (FEM), both in 2D and 3D domains -. In addition, an experimental analysis centred on the detecting of the sub-superficial fiberglass by means of infrared thermography (IRT) technique is carried out. A specific Matlab® script was also implemented. Finally, can be observed that Comsol Multiphysics® not only allows a visualization of the flow, as it is done in Matlab®, but also of the entire specimen geometry with the possibility of realizing a video of the thermal transient during the heating and cooling phases.
Translated title of the contribution | Comparative analysis of heat transfer for an advanced composite material used as insulation in the building field by means of comsol multiphysics® and matlab ® computer programs |
---|---|
Original language | Undefined/Unknown |
Pages (from-to) | 185-195 |
Number of pages | 11 |
Journal | Revista Romana de Materiale/ Romanian Journal of Materials |
Volume | 46 |
Issue number | 2 |
Publication status | Published - 2016 |
Externally published | Yes |
Keywords
- Finite difference method
- Finite element method
- Hemp fibers
- Infrared thermography
- Sub-superficial discontinuities
ASJC Scopus subject areas
- Materials Science(all)