Characterization of oxygen mass transfer in bubble columns: development of optical-experimental and numerical Euler-Euler methods

• Applicants: Dr. Roland Rzehak; Dr.-Ing. Katharina Zähringer
• Subject Area: Chemical and Thermal Process Engineering ; Fluid Mechanics
• Term: from 2019 to 2022
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 423761470

• Final Report Year: 2024

Final Report Abstract

Main outcomes of this project were on one hand the upgrading of the open-source software from the OpenFOAM-Foundation to allow simulation of mass-transfer processes in bubbly flows (group Rzehak), which now also takes into account the previously not considered time-dependence of the bubble composition. On the other hand a high quality experimental database for a bubble column with counter-flow was acquired (group Zähringer), which characterizes fluid dynamics and mass transfer for a large number of operational parameters. Finally, a comparison of simulation results and measured data was conducted, which provides an assessment of the presently achieved quality of the predictions and allows to specify further needs for research in the field of mass transfer in bubbly flows.

Publications

• Experimental investigation of mass transfer in a bubble column, ERCOFTAC Autumn Festival, 10th Oct. 2019, Magdeburg, invited lecture
  Kováts, P., Thévenin, D. & Zähringer, K.
  
• Simulation of mass transfer in bubble columns, 18th HZDR Multiphase Flow Conference, 2021, online, Poster 49
  Khan, H. & R. Rzehak, R.
  
• Simulation of mass transfer in bubble columns, BASF Summer School, 2021, Poster
  Khan, H.
  
• Effect of Bubble Dynamics and Liquid Viscosity in Reactive Bubble Columns, 4th Int. Symp. on Multiscale Multiphase Process Eng., paper P-45, 2022, Berlin
  Taborda, M., Sommerfeld, M., Kováts, P., Dreher, A. & Zähringer, K.
  
• Flow around bubbles: 3D measurement concept with high-speed tomographic system, Conf. on Modelling Fluid Flow, 2022, Budapest, pp. 34/1-8
  Müller, C., Chang, Y., Kováts, P., Zähringer, K. & Thévenin, D.
  
• Fluid dynamics in a countercurrent bubble column: experiments and simulations. Conf. on Modelling Fluid Flow, Budapest, 32/1-8, 2022
  Kováts, P., Zähringer, K., Khan, H., Rzehak, R. & Thévenin, D.
  
• Investigation of Fluid-dynamics and Mass-transfer in a bubbly mixing layer by Euler-Euler simulation. Chemical Engineering Science, 264, 118147.
  Kappelt, Carolin & Rzehak, Roland
  
• Simulation of mass transfer in bubble columns, 14th European Fluid Mechanics Conference, 2022, Athens
  Khan, H. & R. Rzehak, R.
  
• Simulation of mass transfer in bubble columns, DECHEMA Jahrestreffen der ProcessNet-Fachgruppe Mehrphasenströmungen, 2022, Poster P1.11
  Khan, H. & R. Rzehak, R.
  
• Statistical Analysis Of Bubble Parameters From A Model Bubble Column With And Without Countercurrent Flow. Proceedings of the International Symposium on the Application of Laser and Imaging Techniques to Fluid Mechanics, 20, 1-20.
  Kováts, P. & Zähringer, K.
  
• The influence of liquid properties on flow structure, bubble dynamics and mass transfer in a laboratory bubble column: Experimental analysis versus numerical modelling and computation. Chemical Engineering Research and Design, 185, 51-72.
  Taborda, Manuel A.; Kováts, Peter; Zähringer, Katharina & Sommerfeld, Martin
  
• Euler-Euler simulation of absorption and desorption in co- and counter-current bubble column flows. Chemical Engineering Science, 267, 118313.
  Khan, Haris; Lehnigk, Ronald & Rzehak, Roland
  
• Hydrodynamics and shape reconstruction of single rising air bubbles in water using high-speed tomographic particle tracking velocimetry and 3D geometric reconstruction. Experiments in Fluids, 65(1).
  Chang, Yingjie; Müller, Conrad; Kováts, Péter; Guo, Liejin & Zähringer, Katharina
  
• HZDR Multiphase Addon for OpenFOAM (Version 10-s.1-hzdr.3). Rodare.
  Schlegel, F. et al.
  
• Multiphase Cases Repository by HZDR for OpenFOAM Foundation Software. Rodare.
  Hänsch, S. et al.
  
• Study of hydrodynamics in a counter current bubble column, 11th Int. Conference on Multiphase Flow, 2023, Kobe, Japan, paper #314
  Khan, H., Rzehak, R., Kováts, P. & Zähringer, K.
  
• Experimental and numerical investigation of a counter-current flow bubble column. Chemical Engineering Science, 285, 119503.
  Khan, Haris; Kováts, Péter; Zähringer, Katharina & Rzehak, Roland