Dr.-Ing. Swantje Pietsch


address
   Hamburg University of Technology
   Denickestraße 15 (K)
   21073 Hamburg

office
   Building K. Room 2506

phone
   +49 40 428 78 2143

email
   swantje.pietsch(at)tuhh.de

Research project

In this research project the flow stability in a three-dimensional laboratory spouted bed is investigated experimentally and with coupled CFD-DEM simulations. It was found that the stability range can be increased by the insertion of two parallel draft plates. By means of the CFD-DEM simulations it has been shown that for coating purposes the instable spouting is advantageous for obtaining a homogeneuos coating layer as the mixing in the depth of the apparatus is enhanced. The coating quality was investigated experimentally by means of digital image analysis.

In addition, the residence time behavior in a continuous pilot scale spouted bed is characterized by means of a novel tracer method. Magnetizable particles are used as tracer which allows a fast and easy concentration measurement at the outflow and thus the calculation of the residence time.

Further information can be found here.

Publications

Peer-reviewed publications in international journals:


Proceedings of international conferences:

  • Pietsch, S., Kieckhefen, P., Heinrich, S., Müller, M., Schönherr, M., Kleine Jäger, F.:
    Experimental and Numerical Investigation of a Three-Dimensional Prismatic Spouted Bed with Liquid Injection.
    Proceedings of the 8th World Congress on Particle Technology, April 22 – 28, 2018, Orlando, Florida
  • Pietsch, S., Kieckhefen, P., Heinrich, S., Müller, M., Schönherr, M., Kleine Jäger, F.:
    CFD-DEM simulation of particle coating in a three-dimensional prismatic spouted bed.
    Proceedings of the 2nd Nordic Baltic Drying Conference, June 7 – 9, 2017, Hamburg, Germany
  • Pietsch, S., Kieckhefen, P., Heinrich, S., Müller, M., Schönherr, M., Kleine Jäger, F.:
    CFD-DEM modeling of particle coating in a prismatic spouted bed and improvement of spouting stability.
    Proceedings of the 12th International Conference on Fluidized Bed Technology, May 23 – 26, 2017, Krakow, Poland
  • Pietsch, S., Kieckhefen, P., Heinrich, S., Müller, M., Schönherr, M., Kleine Jäger, F.:
    CFD-DEM modeling of circulation frequencies and liquid injection in a prismatic spouted bed.
    Proceedings of the Third International Symposium on Multiscale Multiphase Process Engineering, May 8 – 11, 2017, Toyama, Japan