Groß, T. F. ; Bauer, J. ; Ludwig, G. ; Fernandez Rivas, D. ; Pelz, P. F. (2018)
Bubble nucleation from micro-crevices in a shear flow.
In: Experiments in Fluids, 59 (1)
doi: 10.1007/s00348-017-2459-y
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The formation of gas bubbles at gas cavities located in walls bounding the flow occurs in many technical applications, but is usually hard to observe. Even though, the presence of a fluid flow undoubtedly affects the formation of bubbles, there are very few studies that take this fact into account. In the present paper new experimental results on bubble formation (diffusion-driven nucleation) from surface nuclei in a shear flow are presented. The observed gas-filled cavities are micrometre-sized blind holes etched in silicon substrates. We measure the frequency of bubble generation (nucleation rate), the size of the detaching bubbles and analyse the growth of the surface nuclei. The experimental findings support an extended understanding of bubble formation as a self-excited cyclic process and can serve as validation data for analytical and numerical models.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2018 |
| Autor(en): | Groß, T. F. ; Bauer, J. ; Ludwig, G. ; Fernandez Rivas, D. ; Pelz, P. F. |
| Art des Eintrags: | Bibliographie |
| Titel: | Bubble nucleation from micro-crevices in a shear flow |
| Sprache: | Englisch |
| Publikationsjahr: | Januar 2018 |
| Verlag: | Springer |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Experiments in Fluids |
| Jahrgang/Volume einer Zeitschrift: | 59 |
| (Heft-)Nummer: | 1 |
| DOI: | 10.1007/s00348-017-2459-y |
| URL / URN: | https://doi.org/10.1007/s00348-017-2459-y |
| Kurzbeschreibung (Abstract): | The formation of gas bubbles at gas cavities located in walls bounding the flow occurs in many technical applications, but is usually hard to observe. Even though, the presence of a fluid flow undoubtedly affects the formation of bubbles, there are very few studies that take this fact into account. In the present paper new experimental results on bubble formation (diffusion-driven nucleation) from surface nuclei in a shear flow are presented. The observed gas-filled cavities are micrometre-sized blind holes etched in silicon substrates. We measure the frequency of bubble generation (nucleation rate), the size of the detaching bubbles and analyse the growth of the surface nuclei. The experimental findings support an extended understanding of bubble formation as a self-excited cyclic process and can serve as validation data for analytical and numerical models. |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Institut für Fluidsystemtechnik (FST) (seit 01.10.2006) 16 Fachbereich Maschinenbau > Institut für Fluidsystemtechnik (FST) (seit 01.10.2006) > Kavitation und generische Strömungen in Turbomaschinen Profilbereiche Profilbereiche > Thermo-Fluids & Interfaces |
| Hinterlegungsdatum: | 12 Dez 2017 15:41 |
| Letzte Änderung: | 07 Dez 2023 08:37 |
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