Centrifugal pump design and analysis

AIM : To design and analyse the centrifugal pump.

OBJECTIVE OF THE PROJECT:

Our main objective is to obtain the performance diagram of the designed centrifugal pump and obtain the relationship between pressure ratio and mass flow rate where pressure ratio is the ratio of the outlet total pressure to the inlet total pressure.

ABOUT CENTRIFUGAL PUMP:

Centrifugal pump are used to transport fluids by the conversion of rotational kinetic energy to the hydrodynamic energy of the fluid flow. The rotational energy typically comes from an engine or electric motor.The fluid enters the pump impeller along or near to the rotating axis and is accelerated by the impeller, flowing radially outward into a diffuser or casing, from which it exits.

PROCEDURE FOR THIS PROJECT:

1. Designing the cenifugal pump impellar and casing with suitable dimension.
2. Extruding it to make it 3D geometry.
3. Saving the parts and applying flow simulation to it.
4. Creating wizard for the flow.
5. Applying boundary condition. At inlet giving environment pressure. At outlet applying outlet velocity of 10m/s.
6. Creating global mesh.
7. Defining surface goals which are total average pressure and mass flow rate.
8. Running the flow simulation.

Pressure trajectory:

Velocity trajectory:

Animation:

After Performing Parametric Study:

RESULTS:

1. Mass flow rate increases with increase in velocity. The negative sign in the study for the mass flow rate is due to the mass leaving thr system.

2. Pressure ratio decreases with increase in velocity.

CONCLUSION :

1. I have done the design and analysis of centrifugal pump successfully.