Temperature, OH and CH2O structure in the near field of oxy-fuel flames
Oxygen-enhanced oxy-fuel flame structure in a co-flow non-premixed jet burner has been investigated. The effect of varying jet Reynolds number and O2 concentration on temperature and key species OH and CH2O was analysed. Temperature was measured using polarised/ depolarised (P/D) Rayleigh scattering...
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| 格式: | Conference item |
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2017
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| _version_ | 1826274023524270080 |
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| author | Zulkifli, M Beyrau, F Williams, B |
| author_facet | Zulkifli, M Beyrau, F Williams, B |
| author_sort | Zulkifli, M |
| collection | OXFORD |
| description | Oxygen-enhanced oxy-fuel flame structure in a co-flow non-premixed jet burner has been investigated. The effect of varying jet Reynolds number and O2 concentration on temperature and key species OH and CH2O was analysed. Temperature was measured using polarised/ depolarised (P/D) Rayleigh scattering and the OH/ CH2O species using planar laser induced fluorescence (PLIF), collected simultaneously. ‘Traditional Rayleigh’ requires a constant Rayleigh cross-section throughout the combustion process, which is impossible in high temperature oxy-fuel flames due to thermal decomposition leading to inaccuracy. However, a carefully-chosen combination of fuel and oxidiser can be exploited so the relative signal difference of P/D can be utilised. Mixture fraction can thereby be determined and temperature accurately recovered. This joint measurement enables combustion evolution in preheat (represented by CH2O) and oxidation (represented by OH) zones to be analysed. Detailed analysis of localised extinction was also performed. |
| first_indexed | 2024-03-06T22:37:08Z |
| format | Conference item |
| id | oxford-uuid:5a47d4c0-b08d-4a2b-9c4f-c89a5b39e9c6 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T22:37:08Z |
| publishDate | 2017 |
| record_format | dspace |
| spelling | oxford-uuid:5a47d4c0-b08d-4a2b-9c4f-c89a5b39e9c62022-03-26T17:14:53ZTemperature, OH and CH2O structure in the near field of oxy-fuel flamesConference itemhttp://purl.org/coar/resource_type/c_5794uuid:5a47d4c0-b08d-4a2b-9c4f-c89a5b39e9c6Symplectic Elements at Oxford2017Zulkifli, MBeyrau, FWilliams, BOxygen-enhanced oxy-fuel flame structure in a co-flow non-premixed jet burner has been investigated. The effect of varying jet Reynolds number and O2 concentration on temperature and key species OH and CH2O was analysed. Temperature was measured using polarised/ depolarised (P/D) Rayleigh scattering and the OH/ CH2O species using planar laser induced fluorescence (PLIF), collected simultaneously. ‘Traditional Rayleigh’ requires a constant Rayleigh cross-section throughout the combustion process, which is impossible in high temperature oxy-fuel flames due to thermal decomposition leading to inaccuracy. However, a carefully-chosen combination of fuel and oxidiser can be exploited so the relative signal difference of P/D can be utilised. Mixture fraction can thereby be determined and temperature accurately recovered. This joint measurement enables combustion evolution in preheat (represented by CH2O) and oxidation (represented by OH) zones to be analysed. Detailed analysis of localised extinction was also performed. |
| spellingShingle | Zulkifli, M Beyrau, F Williams, B Temperature, OH and CH2O structure in the near field of oxy-fuel flames |
| title | Temperature, OH and CH2O structure in the near field of oxy-fuel flames |
| title_full | Temperature, OH and CH2O structure in the near field of oxy-fuel flames |
| title_fullStr | Temperature, OH and CH2O structure in the near field of oxy-fuel flames |
| title_full_unstemmed | Temperature, OH and CH2O structure in the near field of oxy-fuel flames |
| title_short | Temperature, OH and CH2O structure in the near field of oxy-fuel flames |
| title_sort | temperature oh and ch2o structure in the near field of oxy fuel flames |
| work_keys_str_mv | AT zulkiflim temperatureohandch2ostructureinthenearfieldofoxyfuelflames AT beyrauf temperatureohandch2ostructureinthenearfieldofoxyfuelflames AT williamsb temperatureohandch2ostructureinthenearfieldofoxyfuelflames |