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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Einsatzmöglichkeiten von Beschichtungssystemen für Giesswerkzeuge im Giessprozess zur Qualitätsverbesserung von Aluminiumgusskolbenrohlingen /

Obuna, Celestine Chikezie. January 2005 (has links)
Zugl.: Aachen, Techn. Hochsch., Diss., 2004.
2

Reibung am Arbeitskolben von Schrägscheibenmaschinen im Langsamlauf /

Breuer, David. January 2007 (has links)
Techn. Hochsch., Diss.--Aachen, 2006.
3

Einfluss von Oberflächengestaltung und Werkstoffwahl auf das tribologische Verhalten von Gleit- und Dichtungskontakten hydraulischer Komponenten /

Hoppermann, Andreas. January 2006 (has links)
Techn. Hochsch., Diss. 2005--Aachen.
4

A fast approach for coupled fluid-thermal modeling of the lubricating interfaces of axial piston machines

Mukherjee, Swarnava, Shang, Lizhi, Vacca, Andrea 25 June 2020 (has links)
The temperature distribution of the lubricating interfaces is an important aspect of the functioning of positive displacement machines. It can determine the efficiency and the life time of the unit. In particular, it directly affects the fluid properties and the thermal induced deformations of the solid bodies. A simulation tool capable of predicting the fluid temperature in such gaps thus becomes very useful in the design process of these machines. The temperature distribution in a film comprises of many physical phenomena including convection and conduction along and across the film. Past numerical approaches solved this multi-directional conduction-convection problem using a threedimensional(3D) grid, making the tool computationally expensive and unsuitable for fast simulations. This paper proposes a hybrid fluid temperature solver, based on, a low computational cost twodimensional(2D) grid, to reduce the simulation time with reasonable accuracy. The piston/cylinder interface of an axial piston machine is selected as reference case to demonstrate the proposed approach. The hybrid approach was found to speedup the simulation times by 36%.

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