Academic Journal
A Lagrangian Analysis of Combustion Regimes Using Multi-modal Turbulent Combustion Model
| العنوان: | A Lagrangian Analysis of Combustion Regimes Using Multi-modal Turbulent Combustion Model |
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| المؤلفون: | Angelilli, Lorenzo, Ciottoli, Pietro Paolo, Hernandez Perez, Francisco, Valorani, Mauro, Mueller, Micheal E., Im, Hong G. |
| المساهمون: | Mechanical Engineering Program, Physical Science and Engineering (PSE) Division, Clean Combustion Research Center, Department of Mechanical and Aerospace Engineering, Sapienza, Via Eudossiana, 18, Rome, 00184, Italy, Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, 08544, NJ, USA |
| بيانات النشر: | Springer Science and Business Media LLC |
| سنة النشر: | 2023 |
| المجموعة: | King Abdullah University of Science and Technology: KAUST Repository |
| الوصف: | High Reynolds number turbulent reacting flows poses a modeling challenge due to the multi-regime, mixed-mode nature of the combustion processes. This study presents a novel unified index that includes the description of both premixed and nonpremixed combustion regimes and the occurrences of local extinction and re-ignition. This classifier is applied to large eddy simulations of the Darmstadt multi-regime burner for the nominal cases 18b and 26b. Lagrangian particles are transported along with the flow in order to monitor the evolution of the local flow-chemistry interaction. The simulations are validated against experimental data, and the Lagrangian properties are compared against the traditional premixed model in progress variable space and a generalized multi-modal manifold model in mixture fraction and generalized progress variable space. The comparison reveals that minor radical species are sensitive to the generalized progress variable dissipation rates, and the multi-modal manifold model is more suitable to reproduce the multi-regime flame structure. Using the multi-modal framework, the regime index is simply defined by the slope of the Lagrangian particle trajectory in the phase space and is able to detect the evolution of the combustion regimes and the occurrence of extinction events. Consistent with the previous experimental findings, the statistics of the regimes reveals that the leaner case 18b is more susceptible to extinction and re-ignition and the regime is predominantly premixed, while the richer 26b case is more pronounced in the nonpremixed regime. ; This work was supported by King Abdullah University of Science and Technology (KAUST) and Italian Ministry of University and Research (MIUR). Computational resources were provided by the KAUST Supercomputing Laboratory (KSL). |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | unknown |
| تدمد: | 1386-6184 1573-1987 |
| Relation: | https://link.springer.com/10.1007/s10494-023-00438-x; Angelilli, L., Ciottoli, P. P., Hernandez-Perez, F. E., Valorani, M., Mueller, M. E., & Im, H. G. (2023). A Lagrangian Analysis of Combustion Regimes Using Multi-modal Turbulent Combustion Model. Flow, Turbulence and Combustion. https://doi.org/10.1007/s10494-023-00438-x; Flow, Turbulence and Combustion; http://hdl.handle.net/10754/692532 |
| DOI: | 10.1007/s10494-023-00438-x |
| الاتاحة: | http://hdl.handle.net/10754/692532 https://doi.org/10.1007/s10494-023-00438-x |
| Rights: | This is an accepted manuscript version of a paper before final publisher editing and formatting. Archived with thanks to Springer Science and Business Media LLC. The version of record is available from Flow, Turbulence and Combustion. ; 2024-06-19 ; https://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: | edsbas.3AE5637D |
| قاعدة البيانات: | BASE |
| تدمد: | 13866184 15731987 |
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| DOI: | 10.1007/s10494-023-00438-x |