IMFTF Keynote Meeting (12) Schedule
Date & Time: Fri, 14 Oct. 2022, 20:00
Chair:
Professor Junwu Wang
Institute of Process Engineering, Chinese Academy of Sciences, China
Programme:
Opening
(20:00 – 20:05 Beijing Time)
Keynote Speech
(20:05 – 20:45 Beijing Time)
Professor Niels G. Deen
Eindhoven University of Technology, The Netherlands
Q&A
(20:45 – 21:00 Beijing Time)
Discussions, closing
(21:00 – 21:10 Beijing Time)
TBD
Platform: Zoom
https://us02web.zoom.us/j/83838442827?pwd=TnVRc2g4aWREYkVYMURMUElyWWJCUT09
Meeting ID: 838 3844 2827
Passcode: 1014
Organizer
International Multiphase Flow Technology Forum
China University of Petroleum-Beijing
Chinese Society of Particuology
View Live
Channel(视频号)
Bilibili(b站)
Keynote Speech
Troubles with bubbles: Marangoni mysteries
Niels G. Deen
Eindhoven University of Technology, The Netherlands
Particles, droplets and bubbles are encountered in various applications, ranging from food to energy. Just think of droplets in emulsions or the production of green hydrogen bubbles in water electrolysis. The fluid dynamics of droplets and bubbles can considerably change due to the presence of surfactants. That is, small concentrations of surfactants can accumulate on the bubble or droplet surface, changing their surface mobility. In this talk I will show our latest results trying to understand and describe these changes in surface dynamics (Marangoni mysteries). I will also explain what the practical consequences are (troubles with bubbles).
Speaker Information
Education：
1998 MSc. in Chemical Engineering, University of Twente, The Netherlands
2001 PhD in multiphase CFD of bubbly flows, Aalborg University Esbjerg, Denmark
Awards：
2019 1.2 M€ Technology Area grant Bubble dynamics in electrolysis.
2009 1.5 M€ ERC Starting grant Bubbles on the cutting edge.
2001-2022 23 research grants with a total budget of 11 M€
Work Experience:
2001-2010 Assistant Professor, Faculty of Science and Technology, University of Twente, The Netherlands
2010-2015 Associate Professor, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, The Netherlands
2016-now Full Professor, Department of Mechanical Engineering, Eindhoven University of Technology, The Netherlands
2019-now Principal Scientist, Eindhoven Institute for Renewable Energy Systems (EIRES),
Eindhoven University of Technology, The Netherlands
Selected Publications:
[number of citations in Scopus (SC) and Google Scholar (GS)]
1. Meulenbroek A.M., Vreman A.W., Deen, N.G. (2020) Competing Marangoni effects form a stagnant cap on the interface of a hydrogen bubble attached to a microelectrode, Electrochim. Acta 385, 138298. [SC=2, GS=3]
2. Zarghami A., Deen, N.G., Vreman A W. (2020) CFD modeling of multiphase flow in an alkaline water elektrolyzer, Chem. Eng. Sci. 227, 115926. [SC=8, GS=10]
3. Besagni, G., Deen, N.G. (2020) Aspect ratio of bubbles in different liquid media: A novel correlation, Chem. Eng. Sci. 215,115383. [SC=17, GS=20]
4. Baltussen, M.W., Kuipers, J.A.M., Deen, N.G. (2017) Direct numerical simulation of effective drag in dense gas–liquid–solid three-phase flows, Chem. Eng. Sci. 158, 561-568. [SC=20, GS=22]
5. Sujatha, K.T., Meeusen, B.G.J., Kuipers, J.A.M., Deen, N.G. (2015) Experimental studies of bubbly flow in a pseudo-2D micro-structured bubble column reactor using digital image analysis, Chem. Eng. Sci. 130, 18-30. [SC=24, GS=26]
6. Ma, T., Lucas, D., Ziegenhein, T., Fröhlich, J., Deen, N.G. (2015) Scale-Adaptive Simulation of a square cross-sectional bubble column, Chem. Eng. Sci. 131, 101-108. [SC=34, GS=42]
7. Jain, D., Kuipers, J.A.M., Deen, N.G. (2014) Numerical study of coalescence and breakup in a bubble column using a hybrid volume of fluid and discrete bubble model approach, Chem. Eng. Sci. 119, 134-146. [SC=37, GS=48]
8. Deen, N.G., Peters, E.A.J.F., Padding, J.T., Kuipers, J.A.M. (2014) Review of direct numerical simulation of fluid-particle mass, momentum and heat transfer in dense gas-solid flows, Chem. Eng. Sci. 116, 710-724. [SC=113, GS=152]
9. Goniva, C., Kloss, C., Deen, N.G., Kuipers, J.A.M., Pirker, S. (2012) Influence of rolling friction on single spout fluidized bed simulation, Particuology 10(5), 582-591. [SC=308, GS=406]
10. Deen, N.G., Kriebitzsch, S.H.L., van der Hoef, M.A., Kuipers, J.A.M. (2012) Direct numerical simulation of flow and heat transfer in dense fluid-particle systems, Chem. Eng. Sci. 81, 329-344. [SC=169, GS=208]
Email:
n.g.deen@tue.nl
Website:
https://www.tue.nl/en/research/researchers/niels-deen/
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