Analiza comparativă a transferului de căldură al unui material compozit avansat de izolație pentru clădiri prin utilizarea programelor de calcul comsol multiphysics® și matlab®

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

S. Perilli, M. Regi, S. Sfarra, I. Nardi

Research output: Contribution to journalArticle

11 Citations (Scopus)

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.

Original languageUndefined/Unknown
Pages (from-to)185-195
Number of pages11
JournalRevista Romana de Materiale/ Romanian Journal of Materials
Volume46
Issue number2
Publication statusPublished - 2016
Externally publishedYes

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Keywords

  • Finite difference method
  • Finite element method
  • Hemp fibers
  • Infrared thermography
  • Sub-superficial discontinuities

ASJC Scopus subject areas

  • Materials Science(all)

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