Experimental investigation of flow phenomena in porous media and fills using PIV (particle image velocimetry)

Purpose of the project is to provide experimental data and the validation of models for simulating fluid flow in porous media. In process plants (eg fixed-bed reactor, fluidized bed) but also natural resources (eg groundwater, oil production) such transport processes are of great importance. Using optical measurement methods, especially the particle image velocimetry, the flow field in beds of spherical particles and other typical packing for reactors (eg, Raschig rings) determined directly. Compared with other optical methods (laser Doppler anemometry) provides the PIV method has the advantage that it provides immediate field sizes. Unlike probe measurements (hotwire anemometry, pressure) is measured non-invasively, non-reactive. Prerequisite for the use of an optical measurement method for the determination of flow parameters in these complex geometries is the most perfect adaptation of the refractive indices of the working fluid and the produced glass-flow reactor geometry and the particle. The measured velocity data are used to evaluate the models based on empirical method for simulating fluid flow in fixed bed reactors and to validate numerical calculations based on the Navier-Stokes equations. At the same time, the measuring method of robust algorithms for the evaluation of the PIV data are further developed.

Contact

Prof. Dr.-Ing. Gunther Brenner, Room 126, Tel. 05323 72-2515
Dipl.-Ing. Adeline Tchikango, Room 122, Tel. 05323 72-3565

Literature

  • C. Knieke,"Messung von Geschwindigkeitsfeldern in Kugelschüttungen mit der PIV Methode", student research project, Institute of Engineering Mechanics, TU Clausthal, 2005.
  • K. Stahr, Konstruktion einer Versuchsanlage zur optischen Messung von Strömungen, Studienarbeit, Institut für Technische Mechanik, TU Clausthal, 2006.
  • A.F.S. Ibánez, Velocity investigations in fixed beds, Alejandra Francisca Segarra Ibánez, diploma thesis Institute of Engineering Mechanics, TU Clausthal, 2008.
  • A.S. Tchikango , C. Knieke, G. Brenner, Velocity measurements in packed beds using particle image velocimetry (PIV), Chemie Ingenieur Technik, (2006), vol. 78, No. 6, pp. 747-750.
  • A.S. Tchikango, P. Giese, G. Brenner, V. Wesling,"Numerical and experimental investigations of particle motion in plasma welding", Chemie Ingenieur Technik, (2007), vol. 79, No, 10, pp. 1699-1703.
  • A.S. Tchikango, P. Giese, G. Brenner, V. Wesling,"Numerical and Experimental Study of Particle Motion in Plasma Arc Welding", Fluid Dynamics and Materials Processing, (2008), vol. 4, No. 2, pp. 77-84.
  • A.S. Tchikango, Experimental study of flows in spherical beds and validation by CFD, GVC Technical Committee on Multiphase Flow and Computational Fluid Dynamics, Überlingen, Germany, 04.03.06.
  • A.S. Tchikango, Measurements of Flows in randomly Packed Beds using the Particle Image Velocimetry", 13th Int. Symp. On Appl. Laser Techniques to Fluid Mechanics, Lisbon, Portugal, June 26-29 2006.
  • A.S. Tchikango, PIV applications at ITM, North German Mechanics Colloquium, Feb. 2007, Göttingen.
  • A.S. Tchikango, Velocity measurements in bulk materials by Particle Image Velocimetry, Measurement 2008, Göttingen, 20-21 February 2008.