1993 Volume 30 Issue 1 Pages 24-31
The removal of fine particles adhering to a wall has been studied using a high speed two-dimensional air jet and paying particular attention to the geometric constitutions of the removal equipment and the duration of air-jet blowing. The experimental results showed that the stable high efficiency region was confined to the vicinity of the impinging point of the air-jet depending on the impinging angle. The high efficiency region was well estimated by a new model where the impinging region was introduced based on the two-dimensional free jet theory. The effect of the nozzle-wall distance and the particle diameter were also estimated.
The change in the removal efficiency with time was also well represented by a model assuming that the efficiency was proportional to the number of removable adhered particles. In addition, the removal characteristics of the sequential pulse jet were the same as those obtained by the one-pulse jet as long as the total duration of the air-jet was kept constant. The change in the efficiency with pulse number was also represented by the same model.
