Carrier-phase DNS of iron particle cloud combustion in a highly turbulent shear layer

Carrier-phase DNS of iron particle cloud combustion in a highly turbulent shear layer

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P． Ghofrani^a^,^*, T.D. Luu^b, S.H. Tey^a, O.T. Stein^b, A. Kempf^a

Particuology | 2026, 115 : 390 - 400

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Particuology | 2026, 115: 390-400

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Carrier-phase DNS of iron particle cloud combustion in a highly turbulent shear layer

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P． Ghofrani^a^,^*, T.D. Luu^b, S.H. Tey^a, O.T. Stein^b, A. Kempf^a

Affiliations

^aChair of Fluid Dynamics, Institute for Energy and Materials Processes, University of Duisburg-Essen, Germany

^bEngler-Bunte-Institut, Simulation of Reacting Thermo-Fluid Systems, Karlsruhe Institute of Technology, Germany

Published: 2026-08-10 doi: 10.1016/j.partic.2026.06.005

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Abstract

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Carrier-phase direct numerical simulations (CP-DNS) of a three-dimensional turbulent shear- and mixing-layer are presented. DNS enables detailed investigation of complex multiphase turbulent reacting systems that are difficult to study experimentally; however, the reliability and reproducibility of such simulations remain uncertain and are potentially sensitive to the underlying numerical treatment. Given this, the simulations are cross-validated against DNS data by Luu et al. (Flow Turbul. Combust. 2024), first in a statistical sense and then, for the first time, by direct comparison of the instantaneous realizations of the two DNS. A further DNS is then presented for a higher Reynolds number at twice the grid resolution. This represents the most resolved carrier-phase DNS of such systems to date and enables higher turbulence conditions that better represent realistic burner operating conditions. The new simulations confirm the previously observed overall system behavior and further demonstrate the influence of Reynolds number on the combustion process. Higher turbulence intensity leads to a broader ignition zone, enhanced oxygen entrainment, and increased ignition and conversion rates, while the particle-scale oxidation behavior remains largely unchanged, indicating weak coupling between gas-phase turbulence and individual particle combustion.

Key words

Iron combustion / Carrier-phase direct numerical simulation / Solid fuel combustion

Cite this Article

P． Ghofrani, T.D. Luu, S.H. Tey, O.T. Stein, A. Kempf. Carrier-phase DNS of iron particle cloud combustion in a highly turbulent shear layer[J]. Particuology, 2026 , 115 : 390 -400 . DOI: 10.1016/j.partic.2026.06.005

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Funding

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International Max Planck Research School for Sustainable Metallurgy (IMPRS SusMet)
Helmholtz Association of German Research Centres (HGF)
Energy Transition (MTET)

Appendix

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Year 2026 volume 115 Issue 0

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Article Info

doi: 10.1016/j.partic.2026.06.005

Receive Date：2026-01-12
Online Date：2026-08-20
Published：2026-08-10

Article Data

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History

Received：2026-01-12
Revised：2026-05-15
Accepted：2026-06-01

Funding

International Max Planck Research School for Sustainable Metallurgy (IMPRS SusMet)

Helmholtz Association of German Research Centres (HGF)

Energy Transition (MTET)

Affiliations

^aChair of Fluid Dynamics, Institute for Energy and Materials Processes, University of Duisburg-Essen, Germany

^bEngler-Bunte-Institut, Simulation of Reacting Thermo-Fluid Systems, Karlsruhe Institute of Technology, Germany

Corresponding:

^* E-mail address: parsa.ghofrani@uni-due.de (P. Ghofrani).

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表12种不同金属材料的力学参数

科 Family	属数 Number of genus	种数 Number of species	占总种数比例 Percentage of total species (%)	属 Genus	种数 Number of species	占总种数比例 Percentage of total species (%)
鹅膏菌科Amanitaceae	2	11	5.26	鹅膏菌属 Amanita	10	4.78
小菇科 Mycenaceae	2	12	5.74	丝盖伞属 Inocybe	5	2.39
多孔菌科 Polyporaceae	8	14	6.70	蜡蘑属 Laccaria	5	2.39
红菇科 Russulaceae	3	23	11.00	小皮伞属 Marasmius	6	2.87
				小菇属 Mycena	11	5.26
				光柄菇属 Pluteus	5	2.39
				红菇属 Russula	17	8.13
				栓菌属 Trametes	5	2.39

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