Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : June 29, 2016 - July 01, 2016
The particle behavior in ESP depends on the particle characteristic, electric field, space charge and flow pattern. Moreover, re-entrainment phenomenon is caused according to the condition. The new hole-type ESP was developed to overcome the re-entrainment in the ESP. The particle flow into the hole by ionic wind. The electric field of a collecting zone in the hole is zero. Therefore, it can be expected that suppression of the re-entrainment. It is important to understand the particle behavior in ESP. Particle image velocimetry (PIV) was used to grasp the particle behaviour in ESP. In the experimental results, the particle flow velocity increase with increasing primary flow velocity. The particle flowed in the hole, this is attributed to ionic wind and Coulomb's force. The velocity of tracer particles are fast in ascending order of Cu and Talc EG. Cu is the most suitable for the collection.
