Untersuchung der Olversorgung in einer triebwerkstypischen Lagerkammer mittels experimenteller und numerischer Methoden

By (author) Matthias Krug

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Extent: 164 pages

Publisher: Logos Verlag Berlin

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

Series: Forschungsberichte aus dem Institut fur Thermische Strömungsmaschinen

Series volume number: 77

Language: German

Paperback (Published)

(July 2019)

ISBN: 9783832549428

6.65 x 9.45 inches

Price: $55.00

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Der Bedarf an effizienteren und emissionsarmen Flugzeugtriebwerken fuhrt aufgrund der hierzu notwendigen steigenden Wellendrehzahl zu einer stetig wachsenden thermischen und mechanischen Belastung der eingesetzten Walzlager. Die Bereitstellung einer robusten Olversorgung zur Schmierung und vor allem Kuhlung der Walzkorper, welche in der Regel uber einen Freistrahl zum Rotor beziehungsweise Lager realisiert wird, ist daher unerlasslich fur den zuverlassigen und sicheren Betrieb eines solchen Flugzeugtriebwerks. Um dem wachsenden Bedarf an mehr Kuhl- beziehungsweise Schmiermittel gerecht zu werden, ist eine optimierte Olzufuhrung und ein somit effizienteres Olsystem vonnoten. Daran schliesst die vorliegende Arbeit an. Mittels einer umfassenden experimentellen Untersuchung einer Olzufuhrung via Freistrahl zum Triebwerkskugellager erfolgt die Identifizierung der Einflussgrossen einer solche Zufuhrung. Zusatzlich werden deren Auswirkung auf die Effizienz der Olversorgung analysiert. In dieser Arbeit wird nachgewiesen, dass diese Einflussgrossen uber einen Parameter zusammengefasst werden konnen, um die Auslegung einer Olversorgung eines Triebwerkskugellagers zu bewerten. Unterstutzt wird dieser Nachweis durch begleitend durchgefuhrte numerische Simulationen der vorliegenden Olversorgung mittels der Volume of Fluid Methode (VoF), welche sich als geeignete Methode fur die numerische Vorhersage der Olversorgungseffizienz erweist.

  • By (author) Matthias Krug

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