Direct Monte Carlo Calculation of Radiative Heat Transfer in Vacuum

1966 ◽  
Vol 88 (4) ◽  
pp. 376-382 ◽  
Author(s):  
R. C. Corlett
Keyword(s):  
Heat Transfer ◽  
Monte Carlo ◽  
Thermal Radiation ◽  
Computer Program ◽  
Radiative Heat Transfer ◽  
Digital Computer ◽  
Radiative Heat ◽  
Monte Carlo Calculation ◽  
Engineering Calculation ◽  
Diffuse Reflectivity

A flexible digital-computer program, intended for engineering calculation of thermal radiation in real enclosures, is described. The method is a simple Monte Carlo application, which can be interpreted as direct mathematical simulation of photon histories. The formulation is based on possible specification of general biangular reflectance. Examples are presented for four simple configurations of surfaces with mixed specular-diffuse reflectivity. An advantage of this type of program is that complex formulations can be rapidly input for solution in a single pass. A disadvantage is the high direct computer cost of precise results.

scholarly journals Effects of radiative heat transfer on the structure of turbulent supersonic channel flow

2011 ◽  
Vol 677 ◽  
pp. 417-444 ◽  
Author(s):  
S. GHOSH ◽  
R. FRIEDRICH ◽  
M. PFITZNER ◽  
CHR. STEMMER ◽  
B. CUENOT ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Thermal Radiation ◽  
Radiative Heat Transfer ◽  
Radiation Effects ◽  
Radiative Heat ◽  
Pure Water ◽  
Molecular Transport ◽  
Working Fluid ◽  
Mean Flow ◽  
Total Energy Balance

The interaction between turbulence in a minimal supersonic channel and radiative heat transfer is studied using large-eddy simulation. The working fluid is pure water vapour with temperature-dependent specific heats and molecular transport coefficients. Its line spectra properties are represented with a statistical narrow-band correlated-k model. A grey gas model is also tested. The parallel no-slip channel walls are treated as black surfaces concerning thermal radiation and are kept at a constant temperature of 1000 K. Simulations have been performed for different optical thicknesses (based on the Planck mean absorption coefficient) and different Mach numbers. Results for the mean flow variables, Reynolds stresses and certain terms of their transport equations indicate that thermal radiation effects counteract compressibility (Mach number) effects. An analysis of the total energy balance reveals the importance of radiative heat transfer, compared to the turbulent and mean molecular heat transport.

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