Natural convection heat transfer in a porous matrix with significant fluid property changes

Yoshio Masuda, Shigeo Kimura, Kazuo Hayashi

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Natural convection heat transfer in a porous matrix with significant fluid property changes under high pressure and temperature is analyzed by a finite element method. A specific problem involves convection in a square box heated from one side. The fluid properties are mostly tabulated from a steam table, but the viscosity is calculated from temperature and density. It is found that the average heat transfer characteristics with significant fluid property changes do not differ much from those with Boussinesq approximation, if the Rayleigh number is defined at the algebraic mean temperature. However, local Nusselt numbers and temperature fields exhibit measurable deviations, primarily due to significant viscosity changes.

Original languageEnglish
Pages (from-to)2065-2069
Number of pages5
JournalNippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume57
Issue number538
Publication statusPublished - 1991 Jun

ASJC Scopus subject areas

  • Mechanical Engineering

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