[HTML][HTML] Advanced modeling approaches for CFD simulations of coal combustion and gasification

C Hasse, P Debiagi, X Wen, K Hildebrandt… - Progress in Energy and …, 2021 - Elsevier
Coal is the most abundant fossil fuel and is widely used as an energy source for combustion
and gasification. Both experimental methods and computational tools are required for the …

Flamelet LES of oxy-fuel swirling flames with different O2/CO2 ratios using directly coupled seamless multi-step solid fuel kinetics

H Nicolai, P Debiagi, J Janicka, C Hasse - Fuel, 2023 - Elsevier
Oxy-fuel combustion, in combination with carbon capture technologies, has generated
significant interest since it has a high potential for rapid CO 2 cutbacks for newly built and …

Development of a multiphase chemical reactor network method as a tool for simulating biomass gasification in fluidized beds

LL Berkel, P Debiagi, H Nicolai, MA Amjed, A Stagni… - Fuel, 2024 - Elsevier
In the near future, biomass is expected to be a key resource for fulfilling clean energy
requirements. The predictive modeling of biomass conversion in industrial systems is still …

Up-scaling of a laboratory-scale pulverised oxyfuel burner to semi-industrial-scale through a flow similarity approach

M Richter, J Ströhle, B Epple - Fuel, 2024 - Elsevier
A major challenge in engineering is the transfer of findings from laboratory-scale
experiments and simulations to a large-scale industrial application. In this study, a flow …

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 …

Large eddy simulation of coal-ammonia flames with varied ammonia injection locations using a flamelet-based approach

S Yadav, P Yu, K Tanno, H Watanabe - Energy, 2023 - Elsevier
The co-combustion characteristics of ammonia with pulverized coal have been investigated
by applying a three-mixture fraction flamelet/progress variable (3Z-FPV) approach to a …

Assessing the importance of differential diffusion in stratified hydrogen–methane flames using extended flamelet tabulation approaches

H Nicolai, L Dressler, J Janicka, C Hasse - Physics of Fluids, 2022 - pubs.aip.org
Taking into account detailed chemical kinetics and therefore allowing for a detailed
representation of the flame's microstructure at reduced computational cost make flamelet …

Numerical investigation of swirl-stabilized pulverized coal flames in air and oxy-fuel atmospheres by means of large eddy simulation coupled with tabulated chemistry

H Nicolai, X Wen, FC Miranda, D Zabrodiec… - Fuel, 2021 - Elsevier
This paper investigates a self-sustained swirl-stabilized pulverized coal combustion
chamber, specially designed to validate numerical models under atmospheric and oxy-fuel …

Carrier-phase DNS of detailed NOx formation in early-stage pulverized coal combustion with fuel-bound nitrogen

A Shamooni, P Debiagi, B Wang, TD Luu, OT Stein… - Fuel, 2021 - Elsevier
Carrier-phase direct numerical simulation of detailed NO x formation in pulverized coal
flames (PCC) with fuel-bound nitrogen is conducted in a 3D temporally evolving mixing layer …

Combined flow, temperature and soot investigation in oxy-fuel biomass combustion under varying oxygen concentrations using laser-optical diagnostics

H Schneider, M Bonarens, J Hebel, H Hamel, J Emmert… - Fuel, 2024 - Elsevier
In pulverized oxy-fuel biomass combustion, intricate interaction of complex fluid-mechanical,
particle-dynamical, and chemical processes manifests even at intermediate scales. This …