TY - JOUR
T1 - Natural convection heat transfer in a porous matrix with significant fluid property changes
AU - Masuda, Yoshio
AU - Kimura, Shigeo
AU - Hayashi, Kazuo
PY - 1991/6
Y1 - 1991/6
N2 - 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.
AB - 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.
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M3 - Article
AN - SCOPUS:0026172599
VL - 57
SP - 2065
EP - 2069
JO - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
JF - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
SN - 0387-5016
IS - 538
ER -