[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 …

Experimental investigations of single particle and particle group combustion in a laminar flow reactor using simultaneous volumetric OH-LIF imaging and diffuse …

T Li, M Schiemann, J Köser, A Dreizler… - … and Sustainable Energy …, 2021 - Elsevier
The volatile combustion of Colombian high-volatile bituminous coal was experimentally
studied in a laboratory laminar flow reactor. The volatile flames corresponding to the single …

Flame propagation modes for iron particle clusters in air, Part II: Transition from continuous to discrete propagation mode under strong convection effects

FH Vance, A Scholtissek, H Nicolai, C Hasse - Combustion and Flame, 2024 - Elsevier
Combustion of iron powder is a promising option for clean and sustainable generation of
heat and power. However, a fundamental understanding of the flame propagation mode is …

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 …

Combustion details of raw and torrefied biomass fuel particles with individually-observed size, shape and mass

A Panahi, N Vorobiev, M Schiemann… - Combustion and …, 2019 - Elsevier
A unique approach and proposed methodology was implemented to determine char burning
rates in conjunction to their prevailing structure from detailed results on the 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 …

Numerical investigation and assessment of flamelet-based models for the prediction of pulverized solid fuel homogeneous ignition and combustion

P Farmand, H Nicolai, C Schumann, A Attili… - Combustion and …, 2022 - Elsevier
The homogeneous ignition and volatile combustion of pulverized solid fuel in single-particle
and particle group configurations were studied numerically in a laminar flat flame burner …

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 …

Evaluation of a flamelet/progress variable approach for pulverized coal combustion in a turbulent mixing layer

M Rieth, AM Kempf, OT Stein, A Kronenburg… - Proceedings of the …, 2019 - Elsevier
A steady flamelet/progress variable (FPV) approach for pulverized coal flames is employed
to simulate coal particle burning in a turbulent shear and mixing layer. The configuration …