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Slip length of the tribo system steel-polyalphaolefin-steel determined by a novel tribometer

Corneli, Tobias ; Ludwig, G. ; Pelz, Peter F. (2022)
Slip length of the tribo system steel-polyalphaolefin-steel determined by a novel tribometer.
10th International Fluid Power Conference. Dresden, Germany (08.-10.03.2016)
doi: 10.26083/tuprints-00021191
Konferenzveröffentlichung, Zweitveröffentlichung, Verlagsversion

Kurzbeschreibung (Abstract)

Nowadays sealing systems are commonly designed by means of hydrodynamic and elastohydrodynamic theories. Although the analytical as well as the computational approaches have improved in meaning full manner since the last decades: For small sealing gaps, in the order of micrometers and below, a discrepancy between experimental investigated and theoretically predicted leakage flows occur. As a cause for the discrepancy a breakdown of the no slip boundary condition is suspected. Since in small sealing gaps the continuum hypothesis is violated and molecular effects have to be considered. One fundamental quantity to take molecular affects into account is the slip length. Within this paper a new measurement apparatus to evaluate the slip length for hydraulic applications is presented. The adjustable gaps between two planar surfaces are in the order of magnitude of 1 μm. In a first step the slip length for the system steel-oil –steel is investigated at three different temperatures: 18°C, 22°C and 25°C. The measured slip lengths are in the order of magnitude of ~100 nm.

Typ des Eintrags: Konferenzveröffentlichung
Erschienen: 2022
Autor(en): Corneli, Tobias ; Ludwig, G. ; Pelz, Peter F.
Art des Eintrags: Zweitveröffentlichung
Titel: Slip length of the tribo system steel-polyalphaolefin-steel determined by a novel tribometer
Sprache: Englisch
Publikationsjahr: 2022
Ort: Darmstadt
Verlag: Dresdner Verein zur Förderung der Fluidtechnik e. V., Dresden
Buchtitel: 10th International Fluid Power Conference (10. IFK) : March 8-10, 2016 in Dresden ; volume 1
Veranstaltungstitel: 10th International Fluid Power Conference
Veranstaltungsort: Dresden, Germany
Veranstaltungsdatum: 08.-10.03.2016
DOI: 10.26083/tuprints-00021191
URL / URN: https://tuprints.ulb.tu-darmstadt.de/21191
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Herkunft: Zweitveröffentlichungsservice
Kurzbeschreibung (Abstract):

Nowadays sealing systems are commonly designed by means of hydrodynamic and elastohydrodynamic theories. Although the analytical as well as the computational approaches have improved in meaning full manner since the last decades: For small sealing gaps, in the order of micrometers and below, a discrepancy between experimental investigated and theoretically predicted leakage flows occur. As a cause for the discrepancy a breakdown of the no slip boundary condition is suspected. Since in small sealing gaps the continuum hypothesis is violated and molecular effects have to be considered. One fundamental quantity to take molecular affects into account is the slip length. Within this paper a new measurement apparatus to evaluate the slip length for hydraulic applications is presented. The adjustable gaps between two planar surfaces are in the order of magnitude of 1 μm. In a first step the slip length for the system steel-oil –steel is investigated at three different temperatures: 18°C, 22°C and 25°C. The measured slip lengths are in the order of magnitude of ~100 nm.

Status: Verlagsversion
URN: urn:nbn:de:tuda-tuprints-211917
Sachgruppe der Dewey Dezimalklassifikatin (DDC): 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften und Maschinenbau
Fachbereich(e)/-gebiet(e): 16 Fachbereich Maschinenbau
16 Fachbereich Maschinenbau > Institut für Fluidsystemtechnik (FST) (seit 01.10.2006)
Hinterlegungsdatum: 09 Mai 2022 11:31
Letzte Änderung: 10 Mai 2022 05:21
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