In the straight diversion river, since the inlet velocity is 10m/s, the velocity entering the blade rotation area is also 10m/s, so the obtained torque is 23.629404Nm, and the oblique diversion has an inlet velocity of 10m/s, but The flow velocity entering the rotating area of ​​the blade will increase to 20~30m/s (continuous equation: V1A1=V2A2), so the torque obtained will be larger, and the direction of the force before entering the blade will also be different, which will also affect the magnitude of the torque.

Finite element analysis model
(total number of elements: 379253)
River area

 

 

 

 Revolve area

 

 

 

Flow field analysis results - streamline diagram
Set the inlet flow velocity 10m/s, the blade speed is 100rpm
(The torque generated by the blade is 23.629404Nm)
The flow velocity before entering the blade is 10m/s.

 

 

 

 

Observe the streamline distribution in line with the situation of the blade rotation. 

 

Flow field analysis results - flow velocity The direction diagram
Set the inlet flow velocity 10m/s, the blade speed is 100rpm
(The torque generated by the blade is 23.629404Nm)
The flow velocity before entering the blade is 10m/s.

 

 

 

 

Observe the streamline distribution in line with the situation of the blade rotation.