Böttler, Hannes ; Kaddar, D. ; Karpowski, T. J. P. ; Ferraro, Federica ; Scholtissek, Arne ; Nicolai, Hendrik ; Hasse, Christian (2024)
Can flamelet manifolds capture the interactions of thermo-diffusive instabilities and turbulence in lean hydrogen flames?—An a-priori analysis.
In: International Journal of Hydrogen Energy, 56
doi: 10.1016/j.ijhydene.2023.12.193
Article, Bibliographie
Abstract
Flamelet-based methods are extensively used in modeling turbulent hydrocarbon flames. However, these models have yet to be established for (lean) premixed hydrogen flames. While flamelet models exist for laminar thermo-diffusively unstable hydrogen flames, for which consideration of curvature effects has resulted in improved model predictions [1], it is still unclear whether these models are directly applicable to turbulent hydrogen flames. Therefore, a detailed assessment of stretch effects on thermochemical states in a turbulent lean premixed hydrogen-air slot flame through finite-rate chemistry simulations is conducted. Strain and curvature are examined individually using a composition space model, revealing their distinct influences on thermochemical states. An a-priori analysis confirms that the previously developed tabulated manifolds fall short of capturing all turbulent flame phenomena, necessitating a novel manifold incorporating both strain and curvature variations. These results underscore the significance of these variations in developing manifold-based combustion models for turbulent lean hydrogen flames.
| Item Type: | Article |
|---|---|
| Erschienen: | 2024 |
| Creators: | Böttler, Hannes ; Kaddar, D. ; Karpowski, T. J. P. ; Ferraro, Federica ; Scholtissek, Arne ; Nicolai, Hendrik ; Hasse, Christian |
| Type of entry: | Bibliographie |
| Title: | Can flamelet manifolds capture the interactions of thermo-diffusive instabilities and turbulence in lean hydrogen flames?—An a-priori analysis |
| Language: | English |
| Date: | 22 February 2024 |
| Place of Publication: | New York |
| Publisher: | Elsevier |
| Journal or Publication Title: | International Journal of Hydrogen Energy |
| Volume of the journal: | 56 |
| DOI: | 10.1016/j.ijhydene.2023.12.193 |
| URL / URN: | https://www.sciencedirect.com/science/article/pii/S036031992... |
| Abstract: | Flamelet-based methods are extensively used in modeling turbulent hydrocarbon flames. However, these models have yet to be established for (lean) premixed hydrogen flames. While flamelet models exist for laminar thermo-diffusively unstable hydrogen flames, for which consideration of curvature effects has resulted in improved model predictions [1], it is still unclear whether these models are directly applicable to turbulent hydrogen flames. Therefore, a detailed assessment of stretch effects on thermochemical states in a turbulent lean premixed hydrogen-air slot flame through finite-rate chemistry simulations is conducted. Strain and curvature are examined individually using a composition space model, revealing their distinct influences on thermochemical states. An a-priori analysis confirms that the previously developed tabulated manifolds fall short of capturing all turbulent flame phenomena, necessitating a novel manifold incorporating both strain and curvature variations. These results underscore the significance of these variations in developing manifold-based combustion models for turbulent lean hydrogen flames. |
| Uncontrolled Keywords: | Turbulent premixed flames, Thermodiffusive instability, Hydrogen combustion, Preferential diffusion, Strain and curvature, Flamelet modeling |
| Divisions: | 16 Department of Mechanical Engineering 16 Department of Mechanical Engineering > Simulation of reactive Thermo-Fluid Systems (STFS) |
| Date Deposited: | 16 Feb 2024 09:35 |
| Last Modified: | 20 Feb 2024 06:30 |
| PPN: | 51562912X |
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