Corneli, Tobias ; Pelz, Peter F. ; Ludwig, Gerhard (2022)
Slip length in narrow sealing gaps – an experimental approach.
18th International Sealing Conference. Stuttgart, Germany (08.10.-09.10.2014)
doi: 10.26083/tuprints-00020896
Konferenzveröffentlichung, Zweitveröffentlichung, Verlagsversion
Kurzbeschreibung (Abstract)
For narrow sealing gaps in average smaller ca. 1 μm it is expected that the no-slip boundary condition does not yield anymore. As a consequence the friction is reduced and the leakage is increased compared to the no-slip design case. Though the concept of slip length was introduced by Navier and Maxwell already in the 19th century, it is up to now costly to measure the slip length. This is due to the required measurement precision. Today the slip length is measured in laboratories for glass, silicium or sapphire wafers while using fluorescence methods to determine the flow velocity and is thus far from sealing applications. The present paper introduces an alternative method to measure the slip length for typical materials that are used in sealing technologies. A key advantage of the presented method is that the slip length can be evaluated while measuring the physical quantities torque and gap setting.
Within the paper the design of the apparatus including the measurement equipment is discussed in detail.
| Typ des Eintrags: | Konferenzveröffentlichung |
|---|---|
| Erschienen: | 2022 |
| Autor(en): | Corneli, Tobias ; Pelz, Peter F. ; Ludwig, Gerhard |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Slip length in narrow sealing gaps – an experimental approach |
| Sprache: | Englisch |
| Publikationsjahr: | 2022 |
| Ort: | Darmstadt |
| Verlag: | VDMA Fluidtechnik |
| Veranstaltungstitel: | 18th International Sealing Conference |
| Veranstaltungsort: | Stuttgart, Germany |
| Veranstaltungsdatum: | 08.10.-09.10.2014 |
| DOI: | 10.26083/tuprints-00020896 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/20896 |
| Herkunft: | Zweitveröffentlichungsservice |
| Kurzbeschreibung (Abstract): | For narrow sealing gaps in average smaller ca. 1 μm it is expected that the no-slip boundary condition does not yield anymore. As a consequence the friction is reduced and the leakage is increased compared to the no-slip design case. Though the concept of slip length was introduced by Navier and Maxwell already in the 19th century, it is up to now costly to measure the slip length. This is due to the required measurement precision. Today the slip length is measured in laboratories for glass, silicium or sapphire wafers while using fluorescence methods to determine the flow velocity and is thus far from sealing applications. The present paper introduces an alternative method to measure the slip length for typical materials that are used in sealing technologies. A key advantage of the presented method is that the slip length can be evaluated while measuring the physical quantities torque and gap setting. Within the paper the design of the apparatus including the measurement equipment is discussed in detail. |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-208964 |
| 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: | 29 Apr 2022 12:38 |
| Letzte Änderung: | 02 Mai 2022 05:32 |
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