The axial velocity distribution is not uniform in the classification region of rotor blades and the value is in relation to the inlet air velocity and the rotary speed of the rotor.

• 由于出风口负压及转笼旋转的影响，转笼内存在不可忽略的轴向速度，其数值的大小与进口风速、转笼转速及在转笼中的位置有关。