Summary: 8th International Symposium on Flow Visualisation (1998)
APPLICATION OF DIGITAL IMAGE PROCESSING
METHODS FOR THE ANALYSIS OF FLOW
STRUCTURES IN CIRCULATING FLUIDIZED BEDS
A. Bredebusch H. Burkhardt U. Lackermeier J. Werther
Keywords: circulating fluidized bed, high speed video, image processing
Abstract
This paper describes experiments to investigate
the flow structure at the wall region of a Circu­
lating Fluidized Bed (CFB). A high­speed video
camera is used to visualize the flow structure
through a transparent silica section. The us­
age of an image intensified camera makes it
necessary to preprocess the images. The im­
age sequences show that there is no homoge­
nous flow of solids downward. To investigate the
flow structure two di#erent methods to estimate
the velocity of the structures automatically are
used. One method is gradient­based and the re­
sult is a two­dimensional field of velocities that

Source: Albert-Ludwigs-Universität Freiburg, Institut für Informatik,, Lehrstuhls für Mustererkennung und Bildverarbeitung

Collections: Computer Technologies and Information Sciences