Koob, Philipp ; Ferraro, Federica ; Nicolai, Hendrik ; Eggels, Ruud ; Staufer, Max ; Hasse, Christian (2024)
Large Eddy Simulation of Soot Formation in a Real Aero-Engine Combustor Using Tabulated Chemistry and a Quadrature-Based Method of Moments.
In: Journal of Engineering for Gas Turbines and Power, 2024, 146 (1)
doi: 10.26083/tuprints-00026528
Artikel, Zweitveröffentlichung, Postprint
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Kurzbeschreibung (Abstract)
Considering the increasingly stringent targets for aircraft emissions, CFD is becoming a viable tool for improving future aero-engine combustors. However, predicting pollutant formation remains challenging. In particular, directly solving the evolution of soot particles is numerically expensive. To reduce the computational cost but retain detailed physical modeling, quadrature-based moments methods can be efficiently employed to approximate the particle number density function (NDF). An example is the recently developed split-based extended quadrature method of moments (S-EQMOM), which enables a continuous description of the soot particles’ NDF, essential to consider particle oxidation accurately. This model has shown promising results in laminar premixed flames up to turbulent laboratory scale configurations. However, the application to large-scale applications is still scarce. In this work, the S-EQMOM model is applied to the Rolls-Royce BR710 aero-engine combustor to investigate the soot evolution process in practically relevant configurations. For this, the soot model is embedded into a high-fidelity simulation framework, consisting of large eddy simulation for the turbulent flow and mixing and the flamelet generated manifold method for chemistry reduction. An additional transport equation for polycyclic aromatic hydrocarbons is solved to model their slow chemistry and the transition from the gaseous phase to the solid phase. Simulations are performed for different operating conditions (idle, approach, climb, take-off) to validate the model using experimental data. Subsequently, the results are analyzed to provide insights into the complex interactions of hydrodynamics, mixing, chemistry, and soot formation.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2024 |
| Autor(en): | Koob, Philipp ; Ferraro, Federica ; Nicolai, Hendrik ; Eggels, Ruud ; Staufer, Max ; Hasse, Christian |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Large Eddy Simulation of Soot Formation in a Real Aero-Engine Combustor Using Tabulated Chemistry and a Quadrature-Based Method of Moments |
| Sprache: | Englisch |
| Publikationsjahr: | 15 Januar 2024 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | Januar 2024 |
| Ort der Erstveröffentlichung: | New York, NY |
| Verlag: | ASME |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Engineering for Gas Turbines and Power |
| Jahrgang/Volume einer Zeitschrift: | 146 |
| (Heft-)Nummer: | 1 |
| Kollation: | 11 Seiten |
| DOI: | 10.26083/tuprints-00026528 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/26528 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | Considering the increasingly stringent targets for aircraft emissions, CFD is becoming a viable tool for improving future aero-engine combustors. However, predicting pollutant formation remains challenging. In particular, directly solving the evolution of soot particles is numerically expensive. To reduce the computational cost but retain detailed physical modeling, quadrature-based moments methods can be efficiently employed to approximate the particle number density function (NDF). An example is the recently developed split-based extended quadrature method of moments (S-EQMOM), which enables a continuous description of the soot particles’ NDF, essential to consider particle oxidation accurately. This model has shown promising results in laminar premixed flames up to turbulent laboratory scale configurations. However, the application to large-scale applications is still scarce. In this work, the S-EQMOM model is applied to the Rolls-Royce BR710 aero-engine combustor to investigate the soot evolution process in practically relevant configurations. For this, the soot model is embedded into a high-fidelity simulation framework, consisting of large eddy simulation for the turbulent flow and mixing and the flamelet generated manifold method for chemistry reduction. An additional transport equation for polycyclic aromatic hydrocarbons is solved to model their slow chemistry and the transition from the gaseous phase to the solid phase. Simulations are performed for different operating conditions (idle, approach, climb, take-off) to validate the model using experimental data. Subsequently, the results are analyzed to provide insights into the complex interactions of hydrodynamics, mixing, chemistry, and soot formation. |
| Freie Schlagworte: | Aircraft engines, Combustion chambers, Simulation, Soot, Chemistry, Emissions, Large Eddy Simulation, Method of moments, S-EQMOM, Computational fluid dynamics (CFD) |
| ID-Nummer: | 011015 |
| Status: | Postprint |
| URN: | urn:nbn:de:tuda-tuprints-265286 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften und Maschinenbau |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Rolls-Royce University Technology Center Combustor Turbine Interaction (UTC) 16 Fachbereich Maschinenbau > Fachgebiet Simulation reaktiver Thermo-Fluid Systeme (STFS) |
| TU-Projekte: | EC/H2020|821418|ESTiMatE |
| Hinterlegungsdatum: | 15 Jan 2024 13:13 |
| Letzte Änderung: | 16 Jan 2024 06:58 |
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| Suche nach Titel in: | TUfind oder in Google |
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- Large Eddy Simulation of Soot Formation in a Real Aero-Engine Combustor Using Tabulated Chemistry and a Quadrature-Based Method of Moments. (deposited 15 Jan 2024 13:13) [Gegenwärtig angezeigt]
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