VMFL057

VMFL057
Radiation and Conduction in Composite Solid Layers

Overview

Reference

C.M. Spuckler, R. Siegel. “Two-Flux and Diffusion Methods for Radiative Transfer in Composite Layers”. Journal of Heat Transfer, Vol 118, pp. 218-222, 1996

SolverAnsys Fluent
Physics/Models

Radiation modeling with DO model, participating medium with gray-band absorption

Input File
VMFL057_FLUENT.cas for Ansys Fluent
Project FilesLink to Project Files Download Page

Test Case

Heat transfer by conduction and radiation is modeled in a composite solid domain consisting of two layers. Both the layers participate in radiation. The two layers are separated by a semi-transparent wall. The upstream and downstream sides of the domain are subjected to convective as well as radiative heat transfer.

Figure 142: Flow Domain

Flow Domain

Material PropertiesGeometry Boundary Conditions

Solid 1:

Density = 2719 kg/m3
Specific Heat = 871 J/kg-k
Thermal Conductivity = 5.67 W/m-K
Absorption Coefficient: gray-band
Refractive Index = 1.5

Solid 2:

Density = 2719 kg/m3
Specific Heat = 871 J/kg-k
Thermal Conductivity = 5.67 W/m-K
Absorption Coefficient: gray-band
Refractive Index = 3

Dimensions of the domain: 2 m X 1 m (the two solid zones are of equal length)

Left-most wall:

Convective
Heat Transfer Coefficient = 56.7 W/m2 K
free stream temperature = 1000K
Semi-transparent

Right-most wall:

Convective
Heat Transfer Coefficient = 56.7 W/m2 K
free stream temperature = 250K
Semi-transparent

Analysis Assumptions and Modeling Notes

Transverse boundaries of the domain are modeled as planes of symmetry.

Results Comparison for Ansys Fluent

Figure 143: Comparison temperature distribution along Y = 0.5 m

Comparison temperature distribution along Y = 0.5 m