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of 16
pro vyhledávání: '"Oliver Munz"'
Publikováno v:
Aerospace, Vol 5, Iss 3, p 82 (2018)
Labyrinth seals are a state-of-the-art sealing technology to prevent and control leakage flows at rotor–stator interfaces in turbomachinery. Higher pressure ratios and the economical use of cooling air require small clearances, which lead to potent
Externí odkaz:
https://doaj.org/article/40dedf27214d4f54b771031535590d77
Autor:
Oliver Munz
Publikováno v:
VDI-Z. 164:28-30
Druckluftaggregate sind vor allem in der Industrie unabdingbare Hilfsmittel. Die Fertigung der darin verbauten Rotoren und Gehäuse, zum Beispiel für Schraubenkompressoren, ist Hochpräzisionsarbeit – und benötigt entsprechend spezialisierte Werk
Publikováno v:
Materials Science and Technology. 36:1012-1019
The nickel-based superalloys Hastelloy X and Haynes 214 are widely used for honeycomb liners; however, thermo-physical properties at temperatures close to the melting range are poorly described in ...
Publikováno v:
Journal of Turbomachinery. 143
Labyrinth seals are used to prevent and control the mass flow rate between rotating components. Due to thermally and mechanically induced expansions during operation and transient flight maneuvers, a contact, the so-called rubbing process, between ro
Publikováno v:
Volume 7: Industrial and Cogeneration; Manufacturing Materials and Metallurgy.
Laser Powder Bed Fusion (L-PBF) enables the production of complex metallic parts. Processes using pulsed wave (PW) laser radiation have been proven to be well suited to build thin-walled honeycomb structures. However, the behavior of these structures
Publikováno v:
Continuum Mechanics and Thermodynamics. 32:1371-1383
A microstructure-based modelling approach was used to study the deformation behaviour of polycrystalline honeycomb structures under rubbing loading. Rubbing originates from the sliding contact between sealing surfaces in a gas turbine engine. As a st
Publikováno v:
Journal of Materials Engineering and Performance. 28:1909-1913
Labyrinth seals with abradable metallic honeycomb structures are common in gas turbines to ensure a tight sealing between rotor and stator. These seals have a big impact on the turbine efficiency. The honeycombs made from nickel-based superalloys are
Publikováno v:
Volume 7C: Heat Transfer.
Although some investigations on the wear behaviour of brush seals can be found in the literature, not all aspects are yet understood during the wear-in process of the seal in operation. However, it is important to understand all aspects in order to e
Publikováno v:
Volume 10A: Structures and Dynamics.
Sealing systems contribute significantly to the efficiency of turbomachinery. Small gap widths, which are important for low leakage mass flows in labyrinth seals, combined with thermal and mechanical expansion of the rotor can lead to contact with th
Publikováno v:
Continuum Mechanics and Thermodynamics. 31:703-713
To meet the ever-growing demands for the efficient operation of turbomachinery, a minimum clearance between the rotating and the stationary components is of great importance. A lack of controlling this clearance often leads to interface rubbing. As a