TY - GEN
T1 - Analysis of radiative heat transfer in an aluminum distributed combustion region
AU - Tang, K. C.
AU - Brewster, M Quinn
PY - 1991
Y1 - 1991
N2 - The discrete-ordinate method was used to model the radiative heat transfer in an aluminum distributed combustion region resulting from the burning of aluminized solid propellant. The participating medium in the aluminum distributed combustion region, which consisted of gas and particle phases, had non-homogeneous, emitting, absorbing, and anisotropic scattering radiative properties. In this study, the contribution from soot and gas radiation was neglected and a one-dimensional gray analysis was used to study the radiant heat transfer from burning aluminum droplets and condensed aluminum oxide particles. The coupling effect of the energy and radiative transfer equations was studied by the iteration method through the divergence of radiative heat flux vector term in the energy equation. Results showed that the coupling effect between the energy and radiative transfer equations was not significant. The decoupled equations predicted the radiative heat feedback about 5% higher than that predicted by the coupled equations. Several factors such as aluminum loading of the propellant, pressure, agglomerate size of aluminum droplets, emissive properties of burning aluminum droplets, and albedo of aluminum oxide, which affected the magnitude of the radiative heat feedback, were also examined.
AB - The discrete-ordinate method was used to model the radiative heat transfer in an aluminum distributed combustion region resulting from the burning of aluminized solid propellant. The participating medium in the aluminum distributed combustion region, which consisted of gas and particle phases, had non-homogeneous, emitting, absorbing, and anisotropic scattering radiative properties. In this study, the contribution from soot and gas radiation was neglected and a one-dimensional gray analysis was used to study the radiant heat transfer from burning aluminum droplets and condensed aluminum oxide particles. The coupling effect of the energy and radiative transfer equations was studied by the iteration method through the divergence of radiative heat flux vector term in the energy equation. Results showed that the coupling effect between the energy and radiative transfer equations was not significant. The decoupled equations predicted the radiative heat feedback about 5% higher than that predicted by the coupled equations. Several factors such as aluminum loading of the propellant, pressure, agglomerate size of aluminum droplets, emissive properties of burning aluminum droplets, and albedo of aluminum oxide, which affected the magnitude of the radiative heat feedback, were also examined.
UR - http://www.scopus.com/inward/record.url?scp=0025862693&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0025862693&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:0025862693
SN - 0791807355
T3 - American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD
SP - 1
EP - 9
BT - Heat Transfer in Fire and Combustion Systems - 1991
PB - Publ by ASME
T2 - 28th National Heat Transfer Conference
Y2 - 28 July 1991 through 31 July 1991
ER -