Dipl.-Ing. Jörg Rheims



  • Research Project
  • Sizing of nonspherical particles and core-shell particles by measuring the light scattering pattern with high spatial and temporal resolution.

  • Methods
  • Development of a new technique to measure optical properties by linking an Abbe refractometer to a CCD array.
  • Mie-theory to compute the light scattered by coated particles. Therefore, the program SCATAP was developed.
  • Designing a new experimental setup consisting of a laser light source known from laser Doppler anemometry (LDA) and a multiple detecting system, a CCD line sensor. This permits very precise measurements of particle size and velocity.
  • Optimized data evaluation in the frequency domain by the Fast-Fourier-Transform (FFT), Power Spectrum Estimation (PSE), Hough-Transform, and others (with Christian Stuht).


  • Publications
  • J. Rheims, T. Wriedt
    Theoretische Untersuchungen zur Größenbestimmung sphärischer, schalenförmiger Teilchen mittels PDA
    Proc. 3. Fachtagung Lasermethoden in der Strömungsmeßtechnik, Bremen, Germany, Sept 5-7, 1994, p. 35.1-35.3
  • H.Dahl, J. Rheims, T. Wriedt, K. Bauckhage
    Gaussian Beam Scattering by Multiple Multipole Method
    Proc. 4th International Congress on Optical Particle Sizing, Nürnberg, Germany, March 21-23, 1995, p. 129-138
  • J. Rheims, H.Dahl, T. Wriedt, K. Bauckhage
    Sizing Coated Spheres with Phase Doppler Anemometry
    ib., p. 409-418
  • U. Fritsching , J. Rheims, T. Wriedt, K. Bauckhage
    Use of homogeneously absorbing materials for research in dispersed multiphase flows
    International Symposium on Measuring techniques for Multiphase Flows, Nanjing, China, April 10-13, 1995, p. 197-204
  • H.Dahl, J. Rheims, T. Wriedt
    Gaussian beam excitation for multiple multipole method
    International Symposium on Electromagnetic Theory, St.Petersburg, Russia, May 1995, p. 670-672
  • J. Rheims, T. Wriedt, K. Bauckhage
    Bestimmung von Kern- und Gesamtdurchmesser schalenförmig aufgebauter, sphärischer Partikeln mittels des bei LDA erzeugten Streulichtmusters
    Proc. 5. Fachtagung Lasermethoden in der Strömungsmeßtechnik, Berlin, Germany, Sept 11-13, 1996, p. 30.1-30.7
  • J. Rheims, J. Köser, T. Wriedt
    Refractive-index measurements in the near-IR using an Abbe refractometer
    Measurement Science and Technology 8 (1997), p. 601-605
    abstract
  • J. Rheims, C. Stuht, T. Wriedt, K. Bauckhage
    Streulichtmessungen an homogenen und schalenförmig aufgebauten Partikeln zur Bestimmung von Partikelgröße und -geschwindigkeit
    Chemie Ingenieur Technik 69 (1997), p. 47-48


  • Personal Data
  • Telephone:
    .49-421-2185428 (office)
    .49-421-2185333 (fax)
    .49-421-4985787 (home)
  • e-mail: rhe@iwt.uni-bremen.de
  • snail-mail:
    Dipl.-Ing. Jörg Rheims
    Universität Bremen
    VT / FB 4
    Badgasteiner Str.3, 28359 Bremen, Germany
    or
    PO box 330 440, 28334 Bremen, Germany


    • These servers provide information about the process engineering department at the University of Bremen and about the city of Bremen.