# Centrifugal Pump Curves

This web application determine Centrifugal Pump performance for different impellor diameter and speed based on Affinity Laws.

Pump Data

rpm
mm

Modified Data

rpm
mm

As per Affinity Laws, Flow and Head varies as following

\displaystyle \displaystyle Q2 = Q1*\left(\frac{N_{2}}{N_{1}}\right)*\left(\frac{D_{2}}{D_{1}}\right)

\displaystyle \displaystyle H2 = H1*\left(\frac{N_{2}}{N_{1}}\right)^{2}*\left(\frac{D_{2}}{D_{1}}\right)^{2}

System curve is obtained as per following relation

\displaystyle \displaystyle H_{Sys} = H + (P_{2}-P_{1})\left(\frac{10.2}{SG}\right) + f1\left(\frac{L_1}{ID_1}\right)\left(\frac{V^{2}}{2g}\right) +f2\left(\frac{L_2}{ID_2}\right)\left(\frac{V^{2}}{2g}\right)

\displaystyle \displaystyle H_{Sys} = H + (P_{2}-P_{1})\left(\frac{2.31}{SG}\right) + f1\left(\frac{L_1}{ID_1}\right)\left(\frac{V^{2}}{2g}\right) +f2\left(\frac{L_2}{ID_2}\right)\left(\frac{V^{2}}{2g}\right)

Pump System

m
mm

Suction Side

bara
mm
m

Discharge Side

bara
mm
m

Modified Pump Curves

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m³/h