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Stabilisierung durch Wandkonturierung, „Endwall treatment“

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Aerodynamik axialer Turbokompressoren

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Zusammenfassung

Die instationäre und dreidimensionale Strömung durch die Verdichterbeschaufelung ist bei der Auslegung der Kanalgeometrie zu berücksichtigen. Die Auslegung der Beschaufelung mit großem Streckungsverhältnis legt zwar die Trennung in die Beschreibung der Kanalströmung als Kaskade und als Meridianströmung nahe, wie von Wu [1] eingeführt wurde. Mit geringeren Streckungsverhältnissen ist die dreidimensionale Wechselwirkung bei dieser getrennten Behandlung jedoch immer schlechter beschreibbar. Bei hohen Belastungen der Profile können die Eckenwirbel aufgrund des umfangsmäßigen Druckgradienten zwei Drittel der Kanalhöhe umfassen, so dass die Blockage und die Verluste stark ansteigen.

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    Franz Joos

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Joos, F. (2020). Stabilisierung durch Wandkonturierung, „Endwall treatment“. In: Aerodynamik axialer Turbokompressoren. Springer Vieweg, Wiesbaden. https://doi.org/10.1007/978-3-658-28937-9_8

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