[HTML][HTML] Numerical approaches for thermochemical conversion of char

NEL Haugen, BKY Loong, RE Mitchell - Progress in Energy and …, 2022 - Elsevier
This paper gives a review of the current state of the art for numerical simulations of char
conversion. In particular, it presents models that have been developed to describe the …

A systematic comparison of machine learning methods for modeling of dynamic processes applied to combustion emission rate modeling

JF Tuttle, LD Blackburn, K Andersson, KM Powell - Applied Energy, 2021 - Elsevier
Ten established, data-driven dynamic algorithms are surveyed and a practical guide for
understanding these methods generated. Existing Python programming packages for …

Carrier-phase DNS of pulverized coal particle ignition and volatile burning in a turbulent mixing layer

M Rieth, AM Kempf, A Kronenburg, OT Stein - Fuel, 2018 - Elsevier
Direct numerical simulations (DNS) of a three-dimensional turbulent mixing layer are
performed, where coal particles seeded in an air stream mix with hot lean combustion …

[HTML][HTML] Fully-resolved simulations of coal particle combustion using a detailed multi-step approach for heterogeneous kinetics

GL Tufano, OT Stein, A Kronenburg, G Gentile… - Fuel, 2019 - Elsevier
Fully-resolved simulations of the heating, ignition, volatile flame combustion and char
conversion of single coal particles in convective gas environments are conducted and …

Pore structure evolution during lean-oxygen combustion of pyrolyzed residual from low-rank coal and its effect on internal oxygen diffusion mechanism

L Ma, L Zhang, D Wang, H Xin, Q Ma - Fuel, 2022 - Elsevier
The lean-oxygen combustion of incompletely pyrolyzed char dominates at the combustion
front of coalfield fires. Using non-local-density functional theory (NLDFT) and Barrette …

Coal particle volatile combustion and flame interaction. Part II: Effects of particle Reynolds number and turbulence

GL Tufano, OT Stein, B Wang, A Kronenburg, M Rieth… - Fuel, 2018 - Elsevier
Direct numerical simulation (DNS) is performed to characterize volatile combustion of
isolated coal particles and closely spaced particle ensembles in laminar and turbulent flow …

Coal particle volatile combustion and flame interaction. Part I: Characterization of transient and group effects

GL Tufano, OT Stein, B Wang, A Kronenburg, M Rieth… - Fuel, 2018 - Elsevier
The heat-up, devolatilization, ignition and volatile combustion of single coal particles and
particle arrays in laminar and turbulent flow are investigated by direct numerical simulation …

Theoretical and experimental investigations on the combustion characteristics of three components mixed municipal solid waste

X Liu, T Asim, G Zhu, R Mishra - Fuel, 2020 - Elsevier
The combustion characteristics of Mixed Municipal Solid Waste (MMSW) play a vital role in
dictating the efficiency of the incineration process. At present, few studies on combustion …

Assessment against Experiments of Devolatilization and Char Burnout Models for the Simulation of an Aerodynamically Staged Swirled Low-NOx Pulverized Coal …

M Torresi, F Fornarelli, B Fortunato, SM Camporeale… - Energies, 2017 - mdpi.com
In the next few years, even though there will be a continuous growth of renewables and a
loss of the share of fossil fuel, energy production will still be strongly dependent on fossil …

Assessment of various tar and soot treatment methods and a priori analysis of the steady laminar flamelet model for use in coal combustion simulation

J McConnell, JC Sutherland - Fuel, 2020 - Elsevier
Soot formed in the fuel-rich regions of coal flames is known to have a significant impact on
the radiative heat transfer characteristics of the flame. It is therefore important to account for …