When the distance between moving and stationary blades increases, the influence of potential flow interference decreases much faster than that of wake velocity change.

Tube axial fans are widely used, that is, the air flow in the same direction as the axis of the fan blade, such as electric fans, air conditioning external fans are tube axial fans.

The wear of the axial flow fan will cause the fan to vibrate, shorten the life of the fan, and in severe cases, the fan will not work properly. In particular, the wear of the fan blades is particularly serious, which not only destroys the flow characteristics in the fan.

When the distance between moving and stationary blades increases, the influence of potential flow interference decreases much faster than that of wake velocity change.

Tube axial fans are widely used, that is, the air flow in the same direction as the axis of the fan blade, such as electric fans, air conditioning external fans are tube axial fans.

The wear of the axial flow fan will cause the fan to vibrate, shorten the life of the fan, and in severe cases, the fan will not work properly. In particular, the wear of the fan blades is particularly serious, which not only destroys the flow characteristics in the fan.