Development of full spectrum correlated k-model for spectral radiation penetration within liquid fuels

Numerically resolved line by line radiation spectrum of large kerosene pool fires

“…The available computational resource among the improvement in numerical methods paved the road to analyze many of complex physical phenomena involved in analysis of energy conversion systems such as combustion [2], multiphase flows [3,4,5], and thermal radiation [6,7]. Thermal radiation plays an important role in heat transfer, spreading, and expansion of fires [8,9].…”

“…Much attention has been devoted in the last decades to develop numerical models that could feasibly take the variation of the spectral absorption coefficients of the gases into account [11]. The most well-known simplifying methods such as weighted sum of gray gases model (WSGG) [12] or full spectrum correlated-k method (FSCKM) [13,7] aim at providing accurate total heat flux and heat source but they do not provide any information about spectral variation of radiation intensity. While the box models can provide spectral flux, they need large number of bands to reach to a satisfactory level of accuracy [14].…”

On the importance and modeling of in-depth spectral radiation absorption in the pyrolysis of black PMMA

“…To efficiently include the spectral nature of absorption coefficient in solution of thermal radiation in condensed materials, Alinejad et al [27] adopted the FSCK method previously presented for the gas phase [37]. In this method, a highly fluctuating spectrum of the absorption coefficient is converted to a monotonically increasing diagram that is easy to work with.…”

“…Six different pyrolysis models are developed, starting from the most detailed model and gradually simplifying the models. The most detailed model is based on the recently developed FSCK method for the in-depth radiation in liquid fuels [27]. We later extended this model for solid materials, where material temperatures can by much higher, by separating the solution of radiation intensity originating from the medium emission from that of the boundary irradiation [28].…”

Modeling Thermal Radiation in Combustion Environments: Progress and Challenges

“…This has resulted in the so-called full-spectrum correlated k-distribution (FSCK) method. Over the past two decades, significant research has gone into extending the FSK method to nonhomogeneous media with and without soot, and liquid fuels [137][138][139][140][141][142][143], nongray walls [144,145], and k-distribution databases constructed from LBL and narrow-band data have been created and disseminated [146,147]. Today, in its third edition, the FSK model is one of the most accurate, efficient, and popular models for the computation of nongray radiation in combustion environments [148][149][150].…”