Fluid Machinery
Pump Specific Speed Simulator
Analyze pump hydraulic conditions (Speed, Flow, Head) to determine the optimum impeller profile: centrifugal/radial, mixed flow, or axial propeller.
Flow Regime
Radial Flow
Optimal design style
Hydraulic Power
98.1 kW
Energy transfer rate
Specific Speed
34.5
Ns (Metric)
Parameters
Application Preset
Animated flow rate sweep
Fluid Machinery Equations
Specific Speed (Metric Ns)
Ns = (N * Q^0.5) / H^0.75
Hydraulic Power (Ph)
Ph = rho * g * Q * H
Shaft Power (Ps)
Ps = Ph / eta (assumed 75% efficiency)
Radial Flow (Centrifugal): Ns <= 70 (high head, low flow)
Mixed Flow: 70 < Ns <= 160 (medium head, medium flow)
Axial Flow (Propeller): Ns > 160 (low head, high flow)
Under current speed of 1450 RPM, specific speed is 34.5.
Impeller Shape & Flow Diagram
Specific Speed (Ns)
34.5
Impeller Geometry
Radial Flow
Hydraulic Power
98.1kW
Estimated Shaft Power
130.8kW
Specific Speed vs. Head Curve
Hydraulic Sweep Table (Head Sweep)
| Head H (m) | Specific Speed (Ns) | Impeller Type | Hydraulic Power |
|---|---|---|---|
| 5.0 m | 193.9 | Axial Flow | 9.81 kW |
| 17.0 m | 77.5 | Mixed Flow | 33.35 kW |
| 29.0 m | 51.9 | Radial Flow | 56.90 kW |
| 41.0 m | 40.0 | Radial Flow | 80.44 kW |
| 53.0 m | 33.0 | Radial Flow | 103.99 kW |
| 65.0 m | 28.3 | Radial Flow | 127.53 kW |
| 77.0 m | 24.9 | Radial Flow | 151.07 kW |
| 89.0 m | 22.4 | Radial Flow | 174.62 kW |
| 101.0 m | 20.4 | Radial Flow | 198.16 kW |
| 113.0 m | 18.7 | Radial Flow | 221.71 kW |
| 125.0 m | 17.4 | Radial Flow | 245.25 kW |
| 137.0 m | 16.2 | Radial Flow | 268.79 kW |
| 149.0 m | 15.2 | Radial Flow | 292.34 kW |
| 161.0 m | 14.3 | Radial Flow | 315.88 kW |
| 173.0 m | 13.6 | Radial Flow | 339.43 kW |
| 185.0 m | 12.9 | Radial Flow | 362.97 kW |
| 197.0 m | 12.3 | Radial Flow | 386.51 kW |