Analysis of heat transfer in ordered and disordered mesoporous TiO 2 films by finite element analysis

Tae Jung Ha, Sin Young Jung, Jun Hyun Bae, Hong Lim Lee, Ho Won Jang, Seok Jin Yoon, Sangwoo Shin, Hyung Hee Cho, Hyung Ho Park

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Ordered mesoporous oxide films have lower thermal conductivities than their corresponding dense films. In order to apply ordered mesoporous oxide films, which possess excellent properties, in various fields, it is necessary to determine their thermal insulation mechanism. In this study, we synthesized ordered and disordered mesoporous TiO2 films as a function of the drying time. While they had similar porosities, they had different pore structures and thermal conductivities. In order to reveal the relationship between the pore structure and thermal conductivity, a simulation of the heat transfer was performed. The thermal properties, temperature distribution, and heat flux vector of the mesoporous films were simulated by finite element analysis. From the comparison of the experimental and simulated results, the mechanism of thermal insulation in the pore structure could be demonstrated.

Original languageEnglish
Pages (from-to)191-194
Number of pages4
JournalMicroporous and Mesoporous Materials
Volume144
Issue number1-3
DOIs
Publication statusPublished - 2011 Oct 1

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials

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