Abstract
In this paper the flow velocity fields during formation and motion of gas bubbles produced by a high voltage pulsed streamer discharge in water are presented. The discharge reactor was a glass parallelepiped filled with distilled water. In the water one or three stainless steel needles and a brass cylinder were placed. The Particle Image Velocimetry (PIV) measurements of the bubble flow pattern were carried out in six different planes, crossing the reactor. We observed that the bubble flow from the needle tips toward the cylindrical electrode was relatively strong and vortices were formed Owing to it the water was stirred in the whole reactor volume, and the whole reactor volume was filled with bubbles.
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