A line by line based weighted sum of gray gases model for inhomogeneous CO2–H2O mixture in oxy-fired combustion

The correlation based zonal method and its application to the back pass channel of oxy/air-fired CFB boiler

“…It has been later modified and used by many researchers including Smith et al [16] and Truelove [17], who published different coefficients for the WSGG in the airfired combustion scenario. The weighted sum of gray gases model (WSGG) is now known as the simplest form of SLW, which was basically developed for the mixture of CO 2 and H 2 O, and therefore, it does not need a mixing scheme [9]. Johansson et al [14] have compared the accuracy and computational cost of SLW, and WSGG for the oxygen fired combustion scenario in a one-dimensional system between two parallel plates.…”

“…However, there are a number of different models with varying accuracy and computational costs to consider the non-gray gas behavior of combustion gases. The line by line calculations (LBL) [9] and narrow band (NB) models [10] are known as the models that can provide the best accuracy, and they are usually used as the benchmark for the evaluation of the accuracy of other non-gray gas models. The global models such as the full spectrum correlated kmethod (FSK) [11], the spectral line-based weighted sum of gray gas method (SLW) [12], are based on reordering the wavenumbers and known as the most efficient available models that can provide even as accurate results as line by line calculations for some cases, that is, a single homogenous gas.…”

Numerical simulations of the radiative transfer in a 2D axisymmetric turbulent non-premixed methane–air flame using up-to-date WSGG and gray-gas models

“…There has been some recent works that propose an additional dimension to the correlations, in addition to the temperature dependence, to allow variations in the concentration ratios [13,15,32]. A different approach was proposed in [17], which obtained correlations separately for H 2 O and CO 2 , and then combined those correlations to solve mixtures with arbitrary ratios in the concentration.…”

Comparison of Weighted Sum Model and Multi Attribute Decision Making Weighted Product Methods in Selecting the Best Elementary School in Indonesia

“…The WSM is the general model which has been used for different applications such as robotics, processing data, and others [19]. It is a method often used in single dimension issues [20].…”