Transient conjugate natural convection heat transfer along a vertical plate fin in a high-porosity medium

Journal Article · Sun Jan 01 04:00:00 EST 1989 · Numer. Heat Transfer; (United States)

DOI:https://doi.org/10.1080/10407788908944681· OSTI ID:5996369

Huang, C I; Chen, C K; Cheng, P

The non-Darcian effects on transient conjugate natural convection-conduction heat transfer from a two-dimensional vertical plate fin embedded in a high-porosity medium are studied numerically. The coupled nonlinear partial differential equations for transient natural convection in the porous medium and transient heat conduction in the fin are solved numerically with a cubic spline collocation method. Numerical results for the heat transfer characteristics are presented for water and air at selected values of the convection-conduction parameter at different times. It is shown that the inertial effect on heat transfer characteristics is negligible at short times; its effect, however, becomes increasingly important at longer times. The time taken to reach steady state is longer for a fluid with a smaller Prandtl number and for a system with a smaller value of the convection-conduction parameter.

• Research Organization: Dept. of Mechanical Engineering, National Cheng-Kung Univ., Tainan (TW); Dept. of Mechanical Engineering, Univ. of Hawaii at Manoa, Honolulu, HI (US)
• OSTI ID: 5996369
• Journal Information: Numer. Heat Transfer; (United States), Journal Name: Numer. Heat Transfer; (United States) Vol. 15:1; ISSN NUHTD
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
AIR
CALCULATION METHODS
CONVECTION
DIFFERENTIAL EQUATIONS
ENERGY TRANSFER
EQUATIONS
FLUIDS
GASES
HEAT TRANSFER
HYDROGEN COMPOUNDS
MASS TRANSFER
MATERIALS
NATURAL CONVECTION
NONLINEAR PROBLEMS
NUMERICAL SOLUTION
OXYGEN COMPOUNDS
PARTIAL DIFFERENTIAL EQUATIONS
POROSITY
POROUS MATERIALS
PRANDTL NUMBER
TWO-DIMENSIONAL CALCULATIONS
WATER