The influence of jet fuels on the emission of pollutants

• Autor(a) principal: Morão, Inês Isabel Ascenção Costa
• Data de Publicação: 2019
• Tipo de documento: Dissertação
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10400.6/8947
• topic: Ansys Fluent; Câmara de Combustão; Cfd; Cfm56-3; Emissão de Poluentes; Helyx-Os; Jet Fuel; Domínio/Área Científica::Engenharia e Tecnologia::Engenharia Aeronáutica

In the present work a CFD simulation was performed, the study component was a CFM56-3 combustor. It was intended to simulate the combustion and emission of pollutants from the different jet fuels (Jet A, Jet B and TS-1), when burning these through ICAO's LTO cycle. Being this a continuity study, the CAD made by Jonas Oliveira was used. The mesh was constructed with HELYX-OS software and the numerical study was made using the commercial software ANSYS Fluent 16.2. Large Eddy Simulation (LES) was used as viscous model. This model is a more efficient than other models to better understand the processes of pollutant formation and to provide their quantitative prediction. The atomization was considered in this study. It can be concluded, amongst all the fuels simulated that increasing the power produces higher NOx. There was also an erratic behaviour in the emissions of UHC and CO results, because an empiric model was used and not a detailed chemical model. [...]