Untersuchung des Warmeubergangs durch Einspritzkuhlung fur ein Hochstleistungsgetriebe

By (author) Felix von Plehwe

Book cover: Untersuchung des Warmeubergangs durch Einspritzkuhlung fur ein Hochstleistungsgetriebe

Extent: 163 pages

Publisher: Logos Verlag Berlin

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

Language: German

Paperback (Published)

(February 2022)

ISBN: 9783832554361

6.65 x 9.45 inches

Price: $93.00

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Angesichts des hohen Nebenstromverhaltnisses moderner Flugtriebwerke wird die Einfuhrung eines Getriebes zwischen Niederdruckturbine und Fan attraktiv. Ein solches Getriebe stellt aufgrund der hohen ubertragenen Leistung und den stark gegensatzlichen Forderungen nach geringem Gewicht, geringem Bauraum, hoher Zuverlassigkeit und hohem Wirkungsgrad eine grosse Herausforderung dar und erfordert die genaue Kenntnis aller beteiligten Vorgange. Einer dieser Vorgange ist der Warmeubergang durch Einspritzkuhlung. In der vorliegenden Arbeit wird eine neuartige experimentelle Methode vorgestellt, mit der dieser am rotierenden Zahnrad ortsaufgelost und mit hoher Genauigkeit bestimmt werden kann. Der Warmeubergang wird mit dieser Methode fur einen breiten Betriebsbereich ermittelt. Der Einfluss von Olvolumenstrom, Drehzahl und Dusenwinkel auf den Warmeubergang wird anhand dieser ortsaufgelosten Daten erstmalig beschrieben. Es zeigt sich die Existenz einer kritischen Drehzahl, bei deren Uberschreitung ein deutlicher Ruckgang des Warmeubergangs auftritt. Durch Verwendung eines kinematischen Modells des Olaufpralls konnen die beobachteten Zusammenhange erklart werden. Ortlich aufgeloste Messungen des Warmeubergangs sind durch die vorliegende Arbeit erstmalig und fur einen weiten Parameterbereich verfugbar. Dies versetzt den Entwickler in die Lage, eine ausreichende Kuhlung der Zahnflanken sicherzustellen, ohne dabei Wirkungsgradverluste durch zu hohe eingesetzte Olvolumenstrome zu riskieren.

  • By (author) Felix von Plehwe

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