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Centrifugal Pump design and Performance Analysis

CENTRIFUGAL PUMP DESIGN AND PERFORMANCE ANALYSIS

1. Geometry:

PUMP

IMPELLER

2. Performance Analysis of the Centrifugal Pump

Performance Analysis of a Centrifugal Pump
Velocity normal to face (Outlet Velocity) [m/s]	10	12	14	16	18	20
Outlet Pressure [Pa]	238287	303272	212656	235301	178969	171778
Inlet Pressure [Pa]	101325	101325	101325	101325	101325	101325
Mass Flow Rate,Q [kg/s]	0.381	0.457	0.533	0.609	0.685	0.761
Pressure Ratio[Outlet Pressure/Inlet Pressure]	2.352	2.993	2.099	2.322	1.766	1.695

3. Discussion:

When the parametric study was carried out with increasing outlet velocity and hence Mass flow rate, the following things were noticed:

The pressure ratio increases at first when we increase the mass flow rate i.e. from 10 m/s to 12 m/s (outlet velocity). The pump efficiency increases as the head delivered by the pump increase with the flow rate.
On further increasing the flow rate, it is noticed that the pressure ratio decreases gradually. The losses in the pump start to dominate in this region and the pump efficiency decreases.
The pump reaches its peak value of Pressure Ratio i.e. 2.993 at outlet velocity 12 m/s and Mass flow rate 0.457 kg/s.

4. Additional Results:

Flow Trajectories

Velocity and Pressure Contours

Complete Data of the Parametric Study and CAD:

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