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@MISC{AskarizadehRavizi:990075,
author = {Askarizadeh Ravizi, Hossein and Pielsticker, Stefan and
Nicolai, Hendrik and Koch, Matthias and Kneer, Reinhold and
Hasse, Christian and Maßmeyer, Anna Lisa},
title = {{R}adiation modelling considering burnout-dependent
properties and cellwise non-uniform particle distributions
in the numerical simulation of pulverised solid fuel
combustion - {D}ataset},
reportid = {RWTH-2024-07124},
year = {2024},
abstract = {The present study evaluates the impact of the gas and
particle radiation on flame characteristics of a pulverised
solid fuel using Reynolds-averaged Navier–Stokes (RANS)
equations. As a reference, a pilot-scale combustor with a 60
$kW\textsubscript{th}$ flame is used. The burner is fed with
pulverised (10-180 micro meter) Rhenish lignite particles
under oxyfuel conditions (25/75 $vol.\%$ O2/CO2). CFD
simulations are carried out using Ansys Fluent equipped with
user-defined functions (UDFs), e.g., for gas and particle
radiative properties and kinetic models (devolatilisation
and char conversion) adapted for oxyfuel conditions.
Particular focus is placed on evaluating detailed modelling
of the particle radiative properties, which are determined
with the aid of Mie theory and taken into account in the
simulations via UDFs as tabulated data. For this purpose,
simulation results for the reference case with constant
particle radiative properties (a common assumption in the
relevant literature) are compared to those obtained with
burnout-dependent particle radiative properties (determined
using the Mie theory -- Mie case) as well as to those
obtained considering the effect of cellwise non-uniform
distributed particles on the burnout-dependent particle
radiative properties (within the framework of a recently
proposed weighted-scaling approach -- WSA case). Simulation
results show that the role of particle radiation is more
pronounced in the near-burner region, such that comparisons
of the predicted temperatures in different models signify
high local temperature differences. The importance of
particle radiation reduces with the axial distance from the
burner until the differences in the predicted temperatures
in all three cases become negligible. In the near-burner
region, predictions of the reference case on the particle
radiative fluxes are much smaller than those of the Mie and
WSA case. These differences lead to high local temperature
differences, especially where strong temperature gradients
exist. Please cite both the dataset
(https://doi.org/10.18154/RWTH-2024-07124) and the paper
(https://doi.org/10.1016/j.fuel.2024.133338) if you use the
dataset for your research.},
cin = {412610},
cid = {$I:(DE-82)412610_20140620$},
pnm = {DFG project G:(GEPRIS)215035359 - TRR 129: Oxyflame -
Entwicklung von Methoden und Modellen zur Beschreibung der
Reaktion fester Brennstoffe in einer Oxyfuel-Atmosphäre
(215035359) / DFG project G:(GEPRIS)240966705 -
Experimentelle Untersuchung der Biomasseverbrennung zur
Validierung numerischer Simulationen (C01) (240966705) / DFG
project G:(GEPRIS)240967567 - Instationäre Modellierung und
Simulation von Oxy-Fuel-Feuerräumen (C02) (240967567) / DFG
project G:(GEPRIS)240984532 - Modellierung der
Strahlungseigenschaften von pulverisierten Biomassepartikeln
bei der Oxy-Fuel-Verbrennung (C04) (240984532)},
pid = {G:(GEPRIS)215035359 / G:(GEPRIS)240966705 /
G:(GEPRIS)240967567 / G:(GEPRIS)240984532},
typ = {PUB:(DE-HGF)32},
doi = {10.18154/RWTH-2024-07124},
url = {https://publications.rwth-aachen.de/record/990075},
}
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