Das Leckageverhalten einer radial adaptiven Dichtung in Abhangigkeit von stromungsmechanischen und geometrischen Einflussfaktoren

By (author) Laura Beermann

Book cover: Das Leckageverhalten einer radial adaptiven Dichtung in Abhangigkeit von stromungsmechanischen und geometrischen Einflussfaktoren

Extent: 121 pages

Publisher: Logos Verlag Berlin

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

Language: German

Paperback (Published)

(February 2021)

ISBN: 9783832552466

6.65 x 9.45 inches

Price: $55.00

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Aufgrund grosser Umfangsgeschwindigkeiten und teils sehr hoher Temperaturen der Komponenten werden in Turbomaschinen beruhrungsfreie Dichtungen eingesetzt. Die in Umfangsrichtung mehrfach geteilte und elastisch aufgehangte adaptive Dichtung schliesst sich aufgrund der uber die Dichtung anliegenden Druckdifferenz bis auf die gewunschte Spaltweite und halt diese auch bei sich andernden Relativdehnungen zwischen Rotor und Stator weitgehend konstant. In dieser Arbeit wird das Betriebsverhalten dieser Dichtung unter realitatsnahen Randbedingungen experimentell und mit Hilfe von numerischen Verfahren untersucht. Fur die experimentellen Untersuchungen wurden zwei komplexe und modulare Versuchsstande neu aufgebaut und eingesetzt. Mit Hilfe einer Konfiguration zur Untersuchung ringformiger Dichtungen bei rotierendem Laufer wurde das Spaltverhalten sowohl bei konzentrischen als auch exzentrischen Verschiebungen analysiert. In einem erganzenden ebenen Aufbau konnte das Spaltverhalten zeit- und ortsaufgelost beobachtet und die treibenden Mechanismen identifiziert werden. Erganzend wurden detaillierte numerische Untersuchungen durchgefuhrt, mit deren Hilfe die Interpretation der experimentellen Ergebnisse unterstutzt wurde.

  • By (author) Laura Beermann

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