抄録
In this study, image processing techniques were used to observe the movement of air containing asbestos-like fibrous materials which acted as tracers for visualization. Because of the varying shapes of the fibers, the shapes of the path-lines visualized were normalized by an image processing technique. Two-dimensional diagrams of velocity vectors were obtained using the path-lines. A blind alley zone model with an outlet and an inlet on the same wall was selected as the experimental model for both discharge and circulation. The flow patterns in the model of air containing fibrous materials were examined experimentally. Then the influences of both height and length of the model zone and the size of the inlet on the flow patterns were examined. The dimensions of the model zone in which the materials were unable to stay were obtained from the results.
