Work

Influence of microgranules on the thermal insulation of the composite materials used in transport

Year: 2022

Type: article

Abstract: In this article, we carried out numerical studies of the heat-insulating properties of a composite reinforced with hollow microgranules. We evaluated the effect of the presence of zones in the matrix not occupied by microgranules on the thermal conductivity coefficient of the composite. Modeling was carried out in ANSYS Fluent 19.2, and simple (SC) cubic packaging was selected. Voids were modeled by removing part of the granules (horizontal or vertical row) and compacting the granules. Calculations were made for several versions of the volume content of microspheres φ = 10%, 20%, 30%, 40%. The results of the studies showed that the vertical through channel contributes to greater heat losses than the horizontal channel. The results for microgranules compaction cases showed that the compaction of the spheres followed by an increase in heat flow in one region is compensated by compaction of the spheres and a decrease in heat flow in the other region.

Source: Transportation research procedia

DOI: 10.1016/j.trpro.2022.06.101

Authors: Sergei Solovev, Olga Soloveva, Yury Vankov, Irina Akhmetova, Rozalina Shakurova

Institution: Kazan State Power Engineering University

Language: English

Topic: Heat and Mass Transfer in Porous Media

Subfield: Computational Mechanics

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: diamond

Funders: Ministry of Education and Science of the Russian Federation, Ministry of Science and Higher Education of the Russian Federation