Centrifugal impeller, the flow area of how to calculate, what section of the water section refers to what?
All the streamlines on this surface are perpendicular to this surface. This surface is the cross section of water. It affects the water carrying capacity of the impeller, that is, the flow rate
The area of the cross section is 2 pi RL., the area of the runner is the area of the cross section
The length of the cross section forming line is L, the intersection line of the cross section forming line and the central line of the flow passage is arranged at the distance from the axis of the impeller to R
