# The Centrifugal Pump Discharge Formula is

By BYJU'S Exam Prep

Updated on: September 25th, 2023

### The centrifugal pump discharge formula is

1. Q = π.D.B.Vf
2. Q = 2π.D.B.Vf
3. Q = π/4.D.B.Vf
4. Q = π/4.D2.B.Vf

Choose the correct answer from the given options and also provide a detailed solution to the answer.

## The centrifugal pump discharge formula is Q = π.D.B.Vf

Solution:

The discharge of a centrifugal pump is the product of the flow area of the pump and flow velocity. It is given as;

Q = Flow area at inlet x flow velocity at inlet = Flow area at outlet x flow velocity at the outlet

Q = A1.Vf1=A2.Vf2

Q = π.D1.B1.Vf1=.D2.B2.Vf2

Where;

• D1 and D2 = Diameter of the impeller at inlet and outlet.
• B1 and B2 = Width of the impeller at inlet and outlet
• Vf1 and Vf2 = Flow velocity and inlet and outlet.

Hence, the centrifugal pump discharge formula is Q = π.D.B.Vf

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