Question

Fluid is pumped against certain pressure what torque ewquired

Answer 1

We need to calculate the torque to force water stored in a cylinder. A piston forces the water out through a small outlet in a controlled flow rate. The piston is connected with a lead screw driven by motor.

We are stuck with how to determine the load as the piston cylinder has high friction to prevent water from flowing to other side and how much force is required to force the water out of a small nozzle.