Centrifugal Pump Simulation
A centrifugal pump is a mechanical device designed to move a fluid by means of the transfer of rotational energy from one or more driven rotors, called impellers. Fluid enters the rapidly rotating impeller along its axis and is cast out by centrifugal force along its circumference through the impeller’s vane tips. The action of the impeller increases the fluid’s velocity and pressure and also directs it towards the pump outlet. The pump casing is specially designed to constrict the fluid from the pump inlet, direct it into the impeller and then slow and control the fluid before discharge.
Simulating the design
Boundry conditions
Inlet pressure = environmental pressure
Outlet Pressure = total pressure outlet (parameter for parametric study)
Define Rotating region and its angular velocity
Goals
Surface goal at outlet lid mass flow rate
pressure at inlet and outlet
@design point 1 outlet velocity 20 m/s
@design point 2 outlet velocity 30 m/s
@design point 3 outlet velocity 40 m/s
With increase in velocity at outlet mass flow rate increases.
Pressure Ratio
@Design Point 1 0.99
@Design Point 2 5.074
@Design Point 3 4.91
| Design Point 1 | Design Point 2 | Design Point 3 | ||
| Velocity normal to face (Outlet Velocity 1) [m/s] | 20 | 30 | 40 | |
| Angular velocity (Rotating Region 1) [rad/s] | 10.47197551 | 10.4719755 | 10.4719755 | |
| GG Mass Flow Rate 1 [kg/s] | -7.892580586 | -124.4898431 | -24.51063845 | |
| SG Average Total Pressure op [Pa] | -359555.0126 | -1494924.431 | -2420495.363 | |
| SG Average Total Pressure ip [Pa] | 400000 | 433381.0742 | 400000 | |
| SG Mass Flow Rate 1 [kg/s] | -45.29315022 | -67.7046191 | -90.56764477 | |