Centrifugal Pump Curves
This web application determine Centrifugal Pump performance for different impellor diameter and speed based on Affinity Laws.
Pump Data
Modified Data
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
Suction Side
Discharge Side
Modified Pump Curves