Air mixture radiative property modelling in the temperature range 10,000–40,000 K

A 3-D multiband closure for radiation and neutron transfer moment models

“…A by-bin re-arrangement of the opacity is also performed on the whole spectrum in the FSK method [57,5], where a PDF is introduced and smooths the opacity. Similarly, smooth, weighted re-arrangements of the opacity are also proposed in [58,59] and in [60]. The goal of the current paper is not to detail or discuss those techniques but to provide a multiband/bin/picket moment system usable in combination with any rearrangement of the frequency according to the opacity value.…”

Importance of Combined Lorentz-Doppler Broadening in High-Temperature Radiative Heat Transfer Applications

“…The absorption coefficient of a gaseous medium governs the radiative heat transfer rates through it. While the highly oscillating nature of the absorption coefficient along the spectrum makes it computationally expensive to evaluate radiative transfer rates from absorption coefficient data directly by the so-called line-by-line (LBL) approach, modern absorption models, such as narrow-band kdistributions [1,2], spectral line based weighted-sum-of-gray-gases (SLW) [3,4], absorption distribution functions (ADF) [5,6] and full-spectrum k-distributions (FSK) [7][8][9][10][11][12][13], were developed based on detailed absorption coefficient data. The LBL approach has been recognized as the most accurate approach to date and has been utilized as a benchmark in radiation calculations.…”

A MULTI-SCALE FULL-SPECTRUM CORRELATED-k DISTRIBUTION FOR RADIATIVE HEAT TRANSFER IN INHOMOGENEOUS GAS MIXTURES

“…There are several ways of implementing equation (17). One computationally convenient way, chosen in this research, is to set…”