Löwe, Jens-Michael ; Roisman, Ilia V. (2015)
Bubble formation under constant flow rate.
ICLASS 2015, 13th Triennial International Conference on Liquid Atomization and Spray Systems. Tainan, Taiwan (23.08.2015-27.08.2015)
Konferenzveröffentlichung, Bibliographie
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Kurzbeschreibung (Abstract)
The generation of bubbles caused by inserting a gas stream into a liquid is a common area of research because it occurs in many technical applications for example in cooling systems of nuclear reactors, water oxygenation or other chemical procedures. Therefore, the prediction of the size as well as the time of bubble dev elopment in dependence on the flow rate and the diameter of the orifice is very important for prediction and optimization of different processes. In this study an analytical model of the bubble formation for a constant flow rate is developed. The focus of the investigation is the periodic formation of single bubbles. Thereby the non - spherical shape of the bubble is calculated using the Young - Laplace equation. Based on the shape of the bubble and the boundary conditions the departure volume, and the time of bubble formation until the departure are calculated. The developed model is verified by a comparison with existing experimental data from the literature. The agreement between the theoret ical predictions and the experimental data is rather good.
| Typ des Eintrags: | Konferenzveröffentlichung |
|---|---|
| Erschienen: | 2015 |
| Autor(en): | Löwe, Jens-Michael ; Roisman, Ilia V. |
| Art des Eintrags: | Bibliographie |
| Titel: | Bubble formation under constant flow rate |
| Sprache: | Englisch |
| Publikationsjahr: | 2015 |
| Veranstaltungstitel: | ICLASS 2015, 13th Triennial International Conference on Liquid Atomization and Spray Systems |
| Veranstaltungsort: | Tainan, Taiwan |
| Veranstaltungsdatum: | 23.08.2015-27.08.2015 |
| Kurzbeschreibung (Abstract): | The generation of bubbles caused by inserting a gas stream into a liquid is a common area of research because it occurs in many technical applications for example in cooling systems of nuclear reactors, water oxygenation or other chemical procedures. Therefore, the prediction of the size as well as the time of bubble dev elopment in dependence on the flow rate and the diameter of the orifice is very important for prediction and optimization of different processes. In this study an analytical model of the bubble formation for a constant flow rate is developed. The focus of the investigation is the periodic formation of single bubbles. Thereby the non - spherical shape of the bubble is calculated using the Young - Laplace equation. Based on the shape of the bubble and the boundary conditions the departure volume, and the time of bubble formation until the departure are calculated. The developed model is verified by a comparison with existing experimental data from the literature. The agreement between the theoret ical predictions and the experimental data is rather good. |
| Freie Schlagworte: | bubble formation, bubble size, bubble volume, formation time |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Fachgebiet Strömungslehre und Aerodynamik (SLA) DFG-Sonderforschungsbereiche (inkl. Transregio) DFG-Sonderforschungsbereiche (inkl. Transregio) > Transregios DFG-Sonderforschungsbereiche (inkl. Transregio) > Transregios > TRR 75 Tropfendynamische Prozesse unter extremen Umgebungsbedingungen |
| Hinterlegungsdatum: | 29 Nov 2019 06:40 |
| Letzte Änderung: | 29 Nov 2019 06:40 |
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