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Étude numérique et expérimentale du comportement d'étanchéité des joints sans contact à rainures hélicoïdales

Abstract : Contactless seals are optimal sealing solution for mechanical systems operating with relatively high speeds. They have an important operation life time, and they were proposed for use in space engines. One sub-category of non-contact seals, the viscoseal, is studied in detail in this work through a numerical and experimental analysis. This work presents a numerical model developed to predict the viscoseal performance in laminar and turbulent regime. Furthermore the sealing performance of the viscoseal is investigated for different geometrical characteristics of the seal. The interface liquid-air in the seal is also studied using a CFD approach based on VOF method. The design and installation of an experimental device allowed the comparison of the numerical and experimental results, the difference between the two does not exceed 10% for 95% of studied cases.
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https://tel.archives-ouvertes.fr/tel-02090110
Contributor : Abes Star :  Contact
Submitted on : Thursday, April 4, 2019 - 2:37:12 PM
Last modification on : Monday, October 12, 2020 - 3:34:30 PM
Long-term archiving on: : Friday, July 5, 2019 - 2:10:24 PM

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2018-Jarray-Mohamed-These.pdf
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  • HAL Id : tel-02090110, version 1

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Mohamed Jarray. Étude numérique et expérimentale du comportement d'étanchéité des joints sans contact à rainures hélicoïdales. Génie mécanique [physics.class-ph]. Université de Poitiers, 2018. Français. ⟨NNT : 2018POIT2299⟩. ⟨tel-02090110⟩

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