Charakterisierung des Betriebsverhaltens axial adaptiver Gleitringdichtungen mit Lufteinblasung

By (author) Julius Wilhelm

Book cover: Charakterisierung des Betriebsverhaltens axial adaptiver Gleitringdichtungen mit Lufteinblasung

Extent: 155 pages

Publisher: Logos Verlag Berlin

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

Language: German

Paperback (Published)

(April 2023)

ISBN: 9783832556518

6.65 x 9.45 inches

Price: $65.00

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Gasturbinen werden in der Energiewirtschaft zur Stromerzeugung eingesetzt und sind als Antriebe fur moderne Flugzeuge aufgrund ihrer hohen spezifischen Leistungen und herausragenden Zuverlassigkeit nahezu alternativlos. Die aktuellen Entwicklungsziele werden neben der weiteren Steigerung des thermischen Wirkungsgrads zunehmend von der Steigerung der Flexibilitat und der Verbesserung des Teillastverhaltens bestimmt. Mit neuartigen adaptiven Dichtungen, wie beispielsweise der axial adaptiven Gleitringdichtung mit Lufteinblasung (AFS), ist es moglich, geringe Spaltweiten uber weite Betriebsbereiche einzuhalten und dabei einen beruhrungsfreien Betrieb der Komponenten bei minimaler Leckage zu gewahrleisten. Im Rahmen der vorliegenden Arbeit werden experimentelle und numerische Ergebnisse zur Charakterisierung des Betriebsverhaltens einer AFS beschrieben. Im Fokus stehen die Ergebnisse zum transienten Schliessverhalten, dem Folgeverhalten bei bewegtem Gehause und zu den Einflussen von Anstromung und Rotation. Erstmals werden experimentelle Daten zur Druckkraft und Luftfilmsteifigkeit fur das Luftlager des Dichtsystems bei drehendem Rotor prasentiert. Im zweiten Teil der Arbeit wird auf das Stromungsfeld und die Validierung der numerischen Stromungssimulation eingegangen. Aus den experimentellen und numerischen Ergebnissen werden Berechnungsansatze fur den stationaren Betrieb abgeleitet und eine beispielhafte Auslegung des Dichtsystems durch Optimierung einzelner Komponenten diskutiert.

  • By (author) Julius Wilhelm

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