Molecular Gas Band Radiation in Cylinders

1974 ◽  
Vol 96 (1) ◽  
pp. 21-26 ◽  
Author(s):  
A. T. Wassel ◽  
D. K. Edwards
Keyword(s):  
Heat Flux ◽  
Spherical Symmetry ◽  
Radiative Heat ◽  
Band Head ◽  
Molecular Gas ◽  
Band Model ◽  
Beam Length ◽  
Transfer Problems ◽  
Gas Volume ◽  
Axial Band

The radiative heat flux in a molecular gas within a cylinder is formulated in terms of an axial band absorptance. The axial band absorptance function is used to reduce the two angular, one spatial, and one spectral integrals encountered to one angular and one spatial integral such as is encountered in radiative transfer problems with spherical symmetry. A closed form is obtained for the axial band absorptance for the exponential-winged band model. Illustrative results are presented for a cylindrical gas volume with trapezoidal, parabolic, or Gaussian temperature profile. Mean beam length, absorptivity, and emissivity of a cylinder of gas are obtained as a function of the optical depth at the band head.

Similarity methods in radiation hydrodynamics

1960 ◽  
Vol 258 (1294) ◽  
pp. 287-301 ◽  
Keyword(s):  
Heat Flux ◽  
Spherical Symmetry ◽  
Radiative Heat ◽  
Radiative Heat Flux ◽  
Radiation Hydrodynamics

The extent to which problems in radiation hydrodynamics may be tackled by similarity methods is investigated for the case of spherical symmetry. In particular the problem of an intense explosion is considered; by the introduction of radiative heat flux the singularity in a solution by Taylor (1950) is removed.

Nonequilibrium radiative heat flux modeling for the Huygens entry probe

2006 ◽  
Vol 111 (E7) ◽  
Author(s):  
T. E. Magin ◽  
L. Caillault ◽  
A. Bourdon ◽  
C. O. Laux
Keyword(s):  
Heat Flux ◽  
Radiative Heat ◽  
Radiative Heat Flux ◽  
Entry Probe

Handling of Collimated Irradiation on a Plane-Parallel Participating Medium

2000 ◽  
Author(s):  
Christian Proulx ◽  
Daniel R. Rousse ◽  
Rodolphe Vaillon ◽  
Jean-François Sacadura
Keyword(s):  
Heat Flux ◽  
Monte Carlo ◽  
Monte Carlo Method ◽  
Radiative Heat ◽  
Radiative Heat Flux ◽  
Scattering Media ◽  
One Dimensional ◽  
Plane Parallel ◽  
Collimated Beam ◽  
Good Agreement

Abstract This article presents selected results of a study comparing two procedures for the treatment of collimated irradiation impinging on one boundary of a participating one-dimensional plane-parallel medium. These procedures are implemented in a CVFEM used to calculate the radiative heat flux and source. Both isotropically and anisotropically scattering media are considered. The results presented show that both procedures provide results in good agreement with those obtained using a Monte Carlo method, when the collimated beam impinges normally.

scholarly journals Radiative Heat Transfer From Gas Turbine Flames

1979 ◽  
Author(s):  
C. A. Ferguson ◽  
A. M. Mellor
Keyword(s):  
Heat Transfer ◽  
Heat Flux ◽  
Gas Turbine ◽  
Radiative Heat ◽  
Normal Component ◽  
Particle Analysis ◽  
Soot Concentration ◽  
Gas Turbine Combustor ◽  
Turbulent Fluctuations ◽  
Model Gas Turbine Combustor

Measurements have been made of the normal component of the radiative heat flux to the wall of a model gas turbine combustor with and without a mirrored background. Measurements have also been made of the centerline soot concentration. The data show that the heat flux correlated with the soot concentration but not universally, since JET A fuel yielded a different curve 1han DIESEL fuel. A theoretical analysis of the heat flux from a soot suspension was formulated. A criterion was established for the use of a small particle analysis. Finally, it is shown that there is no correspondence between theory and these experiments. It is speculated that turbulent fluctuations need to be modeled.

Partitioning measurements of convective and radiative heat flux

2015 ◽  
Vol 84 ◽  
pp. 827-838 ◽  
Author(s):  
Thomas Vega ◽  
Rachel A. Wasson ◽  
Brian Y. Lattimer ◽  
Thomas E. Diller
Keyword(s):  
Heat Flux ◽  
Radiative Heat ◽  
Radiative Heat Flux
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