Recio Balmaseda, Sandra ; Karpowski, Tim Jeremy Patrick ; Nicolai, Hendrik ; Koob, Philipp ; Greifenstein, Max ; Dreizler, Andreas ; Hasse, Christian (2024)
Numerical Invenstigation of Effusion Cooling Air Influence on the CO Emissions for a Single-Sector Aero-Engine Model Combustor.
In: Journal of Engineering for Gas Turbines and Power, 146 (12)
doi: 10.1115/1.4066159
Article, Bibliographie
This is the latest version of this item.
Abstract
Stricter aviation emissions regulations have led to the desire for lean-premixed-vaporized combustors over rich-quench-lean burners. While this operation mode is beneficial for reducing NOx and particulate emissions, the interaction of the flame and hot exhaust gases with the cooling flow results in increased CO emissions. Predicting CO in computational fluid dynamics (CFD) simulations remains challenging. To assess current model performance under practically relevant conditions, Large- Eddy Simulation (LES) of a lab-scale effusion cooling test rig is performed. Flamelet-based manifolds, in combination with the Artificial Thickened Flame (ATF) approach, are utilized to model the Turbulence-Chemistry Interaction (TCI) in the test-rig with detailed chemical kinetics at reduced computational costs. Heat losses are considered via exhaust gas recirculation (EGR). Local transport effects in CO emissions are included through an additional transport equation. Additionally, a Conjugate Heat Transfer (CHT) simulation is performed for good estimations of the thermal boundary conditions. Extensive validation of this comprehensive model is conducted using the available experimental dataset for the studied configuration. Subsequently, model sensitivities for predicting CO are assessed, including the progress variable definition and the formulation of the CO source term in the corresponding transport equation. To investigate the flame thickening influence in the calculated CO, an ATF-postprocessing correction is further developed. Integrating multiple sophisticated pollutant submodels and evaluating their sensitivity offers insights for future investigations into modeling CO emissions in aero-engines and stationary gas turbines.
| Item Type: | Article |
|---|---|
| Erschienen: | 2024 |
| Creators: | Recio Balmaseda, Sandra ; Karpowski, Tim Jeremy Patrick ; Nicolai, Hendrik ; Koob, Philipp ; Greifenstein, Max ; Dreizler, Andreas ; Hasse, Christian |
| Type of entry: | Bibliographie |
| Title: | Numerical Invenstigation of Effusion Cooling Air Influence on the CO Emissions for a Single-Sector Aero-Engine Model Combustor |
| Language: | English |
| Date: | 6 August 2024 |
| Place of Publication: | New York |
| Publisher: | ASME |
| Journal or Publication Title: | Journal of Engineering for Gas Turbines and Power |
| Volume of the journal: | 146 |
| Issue Number: | 12 |
| Collation: | 12 Seiten |
| DOI: | 10.1115/1.4066159 |
| Corresponding Links: | |
| Abstract: | Stricter aviation emissions regulations have led to the desire for lean-premixed-vaporized combustors over rich-quench-lean burners. While this operation mode is beneficial for reducing NOx and particulate emissions, the interaction of the flame and hot exhaust gases with the cooling flow results in increased CO emissions. Predicting CO in computational fluid dynamics (CFD) simulations remains challenging. To assess current model performance under practically relevant conditions, Large- Eddy Simulation (LES) of a lab-scale effusion cooling test rig is performed. Flamelet-based manifolds, in combination with the Artificial Thickened Flame (ATF) approach, are utilized to model the Turbulence-Chemistry Interaction (TCI) in the test-rig with detailed chemical kinetics at reduced computational costs. Heat losses are considered via exhaust gas recirculation (EGR). Local transport effects in CO emissions are included through an additional transport equation. Additionally, a Conjugate Heat Transfer (CHT) simulation is performed for good estimations of the thermal boundary conditions. Extensive validation of this comprehensive model is conducted using the available experimental dataset for the studied configuration. Subsequently, model sensitivities for predicting CO are assessed, including the progress variable definition and the formulation of the CO source term in the corresponding transport equation. To investigate the flame thickening influence in the calculated CO, an ATF-postprocessing correction is further developed. Integrating multiple sophisticated pollutant submodels and evaluating their sensitivity offers insights for future investigations into modeling CO emissions in aero-engines and stationary gas turbines. |
| Classification DDC: | 600 Technology, medicine, applied sciences > 620 Engineering and machine engineering 600 Technology, medicine, applied sciences > 660 Chemical engineering |
| Divisions: | 16 Department of Mechanical Engineering 16 Department of Mechanical Engineering > Simulation of reactive Thermo-Fluid Systems (STFS) 16 Department of Mechanical Engineering > Institute of Reactive Flows and Diagnostics (RSM) |
| Date Deposited: | 04 Oct 2024 08:34 |
| Last Modified: | 17 Oct 2024 09:34 |
| PPN: | 522292291 |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
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Numerical Invenstigation of Effusion Cooling Air Influence on the CO Emissions for a Single-Sector Aero-Engine Model Combustor. (deposited 01 Oct 2024 12:39)
- Numerical Invenstigation of Effusion Cooling Air Influence on the CO Emissions for a Single-Sector Aero-Engine Model Combustor. (deposited 04 Oct 2024 08:34) [Currently Displayed]
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