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%0 Chart or Table
%A Koch, Matthias
%A Tarlinski, David
%A Pielsticker, Stefan
%A Scherer, Viktor
%A Kneer, Reinhold
%T Dataset to "Coupling radiative properties with detailed char conversion kinetics"
%M RWTH-2023-09827
%D 2024
%X In pulverized solid fuel combustion systems, thermal radiation is the primary heat transfer mechanism. In most cases, particle radiation dominates gas radiation. Thus, adequate modeling of particle-radiation interactions in full-scale simulations of combustion chambers may primarily affect the overall accuracy. The radiation behavior depends strongly on the particles' optical properties, characterized by the complex index of refraction (IOR). During pyrolysis and char conversion, these optical properties change the particle morphology, material composition, and particle size. Moreover, the char conversion process depends on the oxygen transport within the particle pores and boundary layer. Consequently, the conversion process can be categorized into three reaction regimes. To quantify the effects of the structural changes during the char conversion process on the radiative properties – absorption efficiency, scattering efficiency, and scattering phase function – the output data of the char conversion kinetics (CCK) model (particle size, ash/carbon content, pore fraction) are used to build artificial particles at different conversion degrees and for the different regimes. Finally, the radiation interaction is calculated by applying an extension of the Mie theory for coated particles, and these results are compared to simplified approaches. This data publication contains the data calculated by the CCK model (time-dependent conversion process), the scripts that utilize this data to couple it to calculate the radiation interaction with single particles, and the resulting data calculated by the Mie-Code. More details are published in 10.1016/j.fuel.2024.130973
%F PUB:(DE-HGF)32
%9 Dataset
%R 10.18154/RWTH-2023-09827
%U https://publications.rwth-aachen.de/record/971829