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An experimental and numerical study of kerosine spray evaporation in a premix duct for gas turbine Combustors at high pressure

Brandt, M. und Rachner, M. und Schmitz, G. (1998) An experimental and numerical study of kerosine spray evaporation in a premix duct for gas turbine Combustors at high pressure. Combustion Science and Technology, Vol 138 (1-6), Seiten 313-348.

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Kurzfassung

The evaporation and mixing of kerosine emerging from a flat prefilming airblast atomizer was studied experimentally and numerically in an optical accessible, straight rectangular duct at conditions relevant for lean premixed and prevaporized combustion. Liquid phase properties were measured by Phase-Doppler anemometry and fuel vapour concentrations were determined by an infrared light extinction technique. Computations were based on the Lagrangian particle tracking technique, and captured the spray features sufficiently well with and without taking into account the spray feddback on the gas field. A degree of evaporation of 95% was measured after 100mm for 9 bar air pressure, 750 K air temperature and 120 m/s for air velocity. No autoignition of the fuel occurred. Parametric variations of pressure, temperature and velocity of the air flow, as well as of the initial temperature of the spray and of fuel loading were conducted. A strong influence of the initial fuel temperature of the spray and of fuel loading were conducted. A strong influence of the initial fuel temperature on evaporation was found. The air pressure had mainly an indirect but strong effect through atomization quality.

Dokumentart:Zeitschriftenbeitrag
Zusätzliche Informationen: LIDO-Berichtsjahr=1999,
Titel:An experimental and numerical study of kerosine spray evaporation in a premix duct for gas turbine Combustors at high pressure
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Brandt, M.NICHT SPEZIFIZIERT
Rachner, M.NICHT SPEZIFIZIERT
Schmitz, G.NICHT SPEZIFIZIERT
Datum:1998
Erschienen in:Combustion Science and Technology
Referierte Publikation:Ja
In ISI Web of Science:Ja
Band:Vol 138
Seitenbereich:Seiten 313-348
Status:veröffentlicht
Stichwörter:Spray evaporation, high pressure, gas turbine combustion chamber, prefilming airblast atomizer, premix duct, kerosine
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:keine Zuordnung
HGF - Programmthema:E - keine Zuordnung
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:E - keine Zuordnung
DLR - Teilgebiet (Projekt, Vorhaben):NICHT SPEZIFIZIERT
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Antriebstechnik
Hinterlegt von: elib DLR-Beauftragter
Hinterlegt am:16 Sep 2005
Letzte Änderung:06 Jan 2010 12:59

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