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Book . 2023 . Peer-reviewed
License: CC BY NC ND
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Book . 2023
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Ein Verfahren zur Kopplung der Smoothed-Particle-Hydrodynamics- und der Finite-Volumen-Methode

Authors: Werdelmann, Bastian;

Ein Verfahren zur Kopplung der Smoothed-Particle-Hydrodynamics- und der Finite-Volumen-Methode

Abstract

Beim Einsatz flüssigen Kraftstoffs in Gasturbinen sind der Verbrennung komplexe zweiphasige Strömungsprozesse vorgelagert. Hier ist insbesondere die Primärzerstäubung des Kraftstoffs zu nennen. Mit der Smoothed-Particle-Hydrodynamics(SPH)-Methode kann die Primärzerstäubung detailliert simuliert werden. Dieser Ansatz ist aufgrund seines hohen Berechnungsaufwands zurzeit jedoch auf kleine räumliche Bereiche begrenzt, wodurch die Kopplung mit den umgebenden Strömungsprozessen, die ohnehin effizienter und genauer mit der Finite-Volumen(FV)-Methode zu berechnen sind, eingeschränkt ist. Es ist daher erstrebenswert, detaillierte SPH-basierte Zerstäubungssimulationen in FV-Simulationen der umgebenden Strömung einzubetten. Dieser Forschungsbericht befasst sich mit der Entwicklung eines solchen hybriden Ansatzes zur direkten Kopplung von SPH- und FV-Rechengebieten. Der Ansatz wird hinsichtlich grundlegender numerischer Aspekte, wie der Massenerhaltung, sorgfältig beleuchtet und optimiert. Die Aufprägung von Rand- und Kopplungsbedingungen wird vereinheitlicht, wobei auch weitere Verbesserungen für Randbedingungen eingeführt werden. Durch geeignete Testfälle wird die Anwendbarkeit der Kopplungsschnittstelle auf brennkammertypische Strömungseigenschaften, wie Rezirkulation und signifikante Instationarität, demonstriert. Hierdurch werden somit wichtige Voraussetzungen zur Weiterentwicklung des Verfahrens für turbulente und mehrphasige Strömungen sowie technische Geometrien geschaffen.

Keywords

Flugtriebwerke und Gasturbinen, Primärzerstäubung flüssiger Brennstoffe, bic Book Industry Communication::T Technology, engineering, agriculture::TN Civil engineering, surveying & building::TNK Building construction & materials, Kopplung numerischer Verfahren (SPH und FV), Science, Technology & Engineering, thema EDItEUR::P Mathematics and Science::PH Physics::PHU Mathematical physics, bic Book Industry Communication::P Mathematics & science::PB Mathematics, Offene Randbedingungen in SPH, Smoothed Particle Hydrodynamics (SPH), bic Book Industry Communication::P Mathematics & science::PD Science: general issues, Mathematics, Construction

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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