Daniel Braig
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View article: Numerical Analysis of the Stability of Iron Dust Bunsen Flames
Numerical Analysis of the Stability of Iron Dust Bunsen Flames Open
This article presents numerical simulations of the response of an iron dust Bunsen flame to particle seeding changes. A validated numerical model is used to study the impact of particle seeding fluctuations on flame stability. Simulations …
View article: Analyzing Iron Dust Bunsen Flames using Numerical Simulations
Analyzing Iron Dust Bunsen Flames using Numerical Simulations Open
This article presents numerical simulations of an iron dust Bunsen flame. The results are validated against experimental results. The burning velocity is extracted from the 3D simulation results, as in the experiments. The agreement of the…
View article: Iron as energy carrier – Mechanistics of iron oxidation and iron oxide reduction deduced from in-situ techniques
Iron as energy carrier – Mechanistics of iron oxidation and iron oxide reduction deduced from in-situ techniques Open
Iron is a very promising candidate for the use as a chemical energy carrier. For application it is crucial to understand the reaction behavior of iron and iron oxide powders in the micrometer range. Recent evidence shows that the oxidation…
View article: Ignition and kinetic-limited oxidation analysis of single iron microparticles in hot laminar flows
Ignition and kinetic-limited oxidation analysis of single iron microparticles in hot laminar flows Open
The ignition temperature is closely linked to the reaction front speed in iron dust flames, a crucial target quantity when trying to predict the characteristics of such flames. To this end, the ignition of iron microparticles is analyzed i…
View article: Carrier-Phase DNS of Ignition and Combustion of Iron Particles in a Turbulent Mixing Layer
Carrier-Phase DNS of Ignition and Combustion of Iron Particles in a Turbulent Mixing Layer Open
Three-dimensional carrier-phase direct numerical simulations (CP-DNS) of reacting iron particle dust clouds in a turbulent mixing layer are conducted. The simulation approach considers the Eulerian transport equations for the reacting gas …
View article: Carrier-phase DNS of ignition and combustion of iron particles in a turbulent mixing layer
Carrier-phase DNS of ignition and combustion of iron particles in a turbulent mixing layer Open
Three-dimensional CP-DNS of reacting iron particle dust clouds in a turbulent mixing layer are conducted. The simulation approach considers the Eulerian transport equations for the reacting gas phase and resolves all scales of turbulence, …
View article: Exploring the oxidation behavior of undiluted and diluted iron particles for energy storage: Mössbauer spectroscopic analysis and kinetic modeling
Exploring the oxidation behavior of undiluted and diluted iron particles for energy storage: Mössbauer spectroscopic analysis and kinetic modeling Open
Measuring the composition at different stages of oxidation enables extracting the kinetics and highlighting differences and similarities of iron particles to bulk material.
View article: A comparison of mechanistic models for the combustion of iron microparticles and their application to polydisperse iron-air suspensions
A comparison of mechanistic models for the combustion of iron microparticles and their application to polydisperse iron-air suspensions Open
Metals can serve as carbon-free energy carriers, e. g. in innovative metal-metal oxide cycles as proposed by Bergthorson (Prog. Energy Combust. Sci., 2018). Iron powder is a suitable candidate since it can be oxidized with air. Nevertheles…