Influence of the injector geometry on mixing and lift-off of premixed jet flames in hot cross flow
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Lean premixed single-stage combustion is state of the art for low pollution combustion in heavy-duty gas turbines with gaseous fuels. The application of premixed jets in multi-stage combustion is a promising approach to lower nitric oxide emissions and to enhance turn-down ratio. In this work mixing and jet flame lift-off heights are investigated experimentally. Mixing is optimized by varying jet nozzle geometries and described with correlations. A parameter study is conducted to identify the influencing variables of flame lift-off. Finally, a new model is developed to predict the lift-off height of premixed jet flames in hot cross flow.
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Influence of the injector geometry on mixing and lift-off of premixed jet flames in hot cross flow, Michael Kolb
- Sprache
- Erscheinungsdatum
- 2016
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- Titel
- Influence of the injector geometry on mixing and lift-off of premixed jet flames in hot cross flow
- Sprache
- Englisch
- Autor*innen
- Michael Kolb
- Verlag
- Verlag Dr. Hut
- Erscheinungsdatum
- 2016
- ISBN10
- 3843925593
- ISBN13
- 9783843925594
- Reihe
- Energietechnik
- Kategorie
- Skripten & Universitätslehrbücher
- Beschreibung
- Lean premixed single-stage combustion is state of the art for low pollution combustion in heavy-duty gas turbines with gaseous fuels. The application of premixed jets in multi-stage combustion is a promising approach to lower nitric oxide emissions and to enhance turn-down ratio. In this work mixing and jet flame lift-off heights are investigated experimentally. Mixing is optimized by varying jet nozzle geometries and described with correlations. A parameter study is conducted to identify the influencing variables of flame lift-off. Finally, a new model is developed to predict the lift-off height of premixed jet flames in hot cross flow.