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@ARTICLE{Liu:903575,
author = {Liu, Xiongguo and Kelm, Stephan and Yin, Chungen and
Allelein, Hans-Josef},
title = {{N}ew {H} 2 {O} weighted sum of gray gases model for
natural convection flows within large cavities},
journal = {Journal of physics / Conference Series},
volume = {2116},
number = {1},
issn = {1742-6588},
address = {Bristol},
publisher = {IOP Publ.},
reportid = {FZJ-2021-05230},
pages = {012064},
year = {2021},
abstract = {Radiation heat transfer plays a significant role in
buoyancy driven flows for large scale facilities. In the
analysis of nuclear containment safety during severe
accidents, it has been found that the thermal radiation
particularly affects the temperature distribution and
containment pressurization due to the humidity environment.
In order to model thermal radiation, one of the main
challenges is the description of nongray gas property for
the steam-air mixtures. The weighted sum of gray gases model
(WSGG) is a reasonable method in engineering applications
because of its computational efficiency. There are many WSGG
models available for combustion applications, but none of
them is dedicated for low temperature applications.
Furthermore, most of the existing WSGG models only provide
the fixed partial pressure ratios (e.g., pH2O = 2pCO2 for
methane). To overcome this limitation, a tailored WSGG model
is derived by the Line-by-Line model for a gas mixture
composed of arbitrary concentrations of H2O. This tailored
WSGG model is valid for the pressure path length ranging
from 0.0001 to 10 atm · m, and for the temperature from 300
to 1200 K. The WSGG correlations are verified against the
Line-by-Line benchmark solutions with
isothermal/non-isothermal temperatures and
homogeneous/non-homogeneous concentrations. The results
demonstrate the ability and efficiency of the new tailored
WSGG formulation.},
cin = {IEK-6},
ddc = {530},
cid = {I:(DE-Juel1)IEK-6-20101013},
pnm = {1421 - Design Basis Accidents and Materials Research
(POF4-142)},
pid = {G:(DE-HGF)POF4-1421},
typ = {PUB:(DE-HGF)16},
doi = {10.1088/1742-6596/2116/1/012064},
url = {https://juser.fz-juelich.de/record/903575},
}