Stryczek J.

Flows Features in the Internal Channels of Involute External Gear Pumps

Results of investigations of external gear pump with involute tooth profile which goal was to obtain the flow patterns in the suction and discharge chambers, and in meshing region and examining the effect on them of operating parameters of the pump were presented. Flow patterns were obtained by visualisation of fluid flow with a high-speed video recording of working process of the pump with a lid made of a transparent material. As result of video analysis appearance of cavities in the fluid closed in trapped volume was found.