Modellierung der Zerstaubung und der Spruhstrahlausbreitung in Triebwerksbrennkammern

By (author) Frank-Oliver Bartz

Book cover: Modellierung der Zerstaubung und der Spruhstrahlausbreitung in Triebwerksbrennkammern

Extent: 162 pages

Publisher: Logos Verlag Berlin

Subjects: Technical Sciences: Computer Science, Engineering, IT, & Math

Series: Forschungsberichte aus dem Institut fur Thermische Strömungsmaschinen

Series volume number: 80

Language: German

Paperback (Published)

(September 2020)

ISBN: 9783832551667

6.65 x 9.45 inches

Price: $64.00

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Die Aufbereitung des flussigen Kraftstoffes in Brennkammern von Gasturbinen beeinflusst massgeblich die entstehenden Schadstoffe. In modernen Brennkammern von Flugtriebwerken erfolgt die Aufbereitung des Luft-Brennstoff-Gemischs durch luftgestutzte Brennstoffdusen, sogenannten “Airblast-Zerstaubern”. Der aufgepragte Kraftstofffilm wird unter der Einwirkung von Luft in Ligamente und Tropfen zerteilt. Falls ausreichend grosse aerodynamische Krafte an diesen Ligamenten und Tropfen vorherrschen, werden diese nachzerstaubt. Diese Nachzerstaubung wird als Sekundarzerfall bezeichnet. Der flussige Kraftstoff breitet sich weiterhin aus und verdunstet, bevor er verbrennt. Diese Arbeit befasst sich mit der Modellierung der Zerstaubung und Ausbreitung des Kraftstoffes in Triebwerksbrennkammern. Hierbei liegt der Schwerpunkt auf dem Sekundarzerfall. Basierend auf fruheren Arbeiten am Institut fur Thermische Stromungsmaschinen des Karlsruher Instituts fur Technologie wird ein Modell zur Beschreibung des Sekundarzerfalls erweitert. Anschliessend wird anhand von numerischen Berechnungen der Frage nachgegangen, inwiefern sich das Sekundarzerfallsmodell auf die berechnete Ausbreitung des Kraftstoffes in einer Flugtriebwerksbrennkammer auswirkt.

  • By (author) Frank-Oliver Bartz

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