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WASSERWIRTSCHAFT
Published in: WASSERWIRTSCHAFT 13/2015

01-05-2015 | Hydropower

Using Machine Hammer to Reduce Friction in Turbulent Fluid Flows

Authors: Dipl.-Ing. Stefan Gössinger, Univ. Prof. Dipl.-Ing. Dr.-Ing. Christian Bauer, Dipl.-Ing. Dr. techn. Christoph Lechner

Published in: WASSERWIRTSCHAFT | Issue 13/2015

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Excerpt

In 2012 a new approach of implementing riblet-structures in metal surfaces in order to generate the so called Shark Skin Effect was presented. With such surface structures drag reduction in turbulent fluid flows is possible. The structures were realized using the machine hammer peening surface treatment technology. At the end of the paper “Using Machine Hammer Peening to Realize Defined Surface Structures in Order to Reduce Friction in Turbulent Fluid Flows” in 2012, further directions of research were suggested. In the following paper the implementation of appropriate structures for hydraulic machines and also the investigation of a structured free form surface are described in detail. …
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Literature
[1]
Gössinger, S; Bauer, C; Lechner, C; Bleicher, F.: Using Machine Hammer Peening to Realize Defined Surface Structures in Order to Reduce Friction in Turbulent Fluid Flows. In: 17th International Conference on Hydropower Plants, Laxenburg 2012, Pumped storage in the context of renewable energy supply, S. 379–388.
[2]
Lechner, C.: Oberflächenmodifikation unter Einsatz der Technologie des Schlagverdichtens (Machine Hammer Peenings). Dissertation, Technische Universität Wien, 2014.
[3]
Bechert, D. W; Bartenwerfer, M.: The viscous flow on surfaces with longitudinal ribs. In: J. Fluid Mech. (1989), Vol. 206, pp. 105–129.CrossRef
[4]
Arbeitsgruppe des Fachforums “Machine Hammer Peening” (ed.): Richtlinien zur Terminologie für das Verfahren der mechanischen Oberflächenbehandlung “Maschinelles Oberflächenhämmern (status 07.04.2014).
[5]
Gössinger, S; Bauer, C; Lechner, C.: Using machine hammer peening to realize defined surface structure in order to reduce friction in turbulent fluid flow — part 2. In: 18th International Seminar on Hydropower Plants, Laxenburg 2014, Innovations and Development Needs for Sustainable Growth of Hydropower, S. 751–765.
Metadata
Title
Using Machine Hammer to Reduce Friction in Turbulent Fluid Flows
Authors
Dipl.-Ing. Stefan Gössinger
Univ. Prof. Dipl.-Ing. Dr.-Ing. Christian Bauer
Dipl.-Ing. Dr. techn. Christoph Lechner
Publication date
01-05-2015
Publisher
Springer Fachmedien Wiesbaden
Published in
WASSERWIRTSCHAFT / Issue 13/2015
Print ISSN: 0043-0978
Electronic ISSN: 2192-8762
DOI
https://doi.org/10.1007/s35147-015-0500-8

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