Convective-diffusive heat transfer in a packed-bed with constant heat flux at the wall: An asymptotic solution for [xi] [r arrow] large

Journal Article · · International Communications in Heat and Mass Transfer; (United States)

DOI:https://doi.org/10.1016/0735-1933(94)90011-6· OSTI ID:7018937

Arce, P; Trigatti, I M.B. ^[1]

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1. Florida State Univ., Tallahassee, FL (United States). Dept. of Chemical Engineering

Packed-bed systems with axial convective, radial diffusive heat transfer and with a constant heat flux at the wall are studied. Asymptotic solutions valid for axial distances sufficiently away from the inlet position of the packed-bed are presented and their behavior investigated. Two geometrical configurations (i.e., the parallel plate and the cylindrical tube) are analyzed. Also, lower bounds for the axial coordinate are derived and their effect on the validity of the asymptotic solution are investigated. The asymptotic temperature profile is shown to yield the correct bulk temperature profile and to predict the correct Nusselt number for both types of geometries.

• OSTI ID: 7018937
• Journal Information: International Communications in Heat and Mass Transfer; (United States), Vol. 21:3; ISSN 0735-1933
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
PACKED BEDS
CONVECTION
TEMPERATURE DISTRIBUTION
CALCULATION METHODS
THERMAL DIFFUSION
DIFFUSION
ENERGY TRANSFER
HEAT TRANSFER
MASS TRANSFER
420400* - Engineering- Heat Transfer & Fluid Flow