Fluids Pad — Free Engineering Calculators for Fluid Mechanics

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Fluids Pad

Referenced engineering calculations for students and working engineers.

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Design Workspace

1Fluid & Flow

Fluid

ρ = 998.2 kg/m³·μ = 1.00e-3 Pa·s

Flow rate Q

2Pipe Run

Pipe diameter

mm (ID)

Total length (m)

Elevation Δz (m)

+ uphill · − downhill

Material

3Fittings & Valves

Elbows

90° elbow — standardK=0.9

0

180° return bendK=1.5

0

Tees

Tee — through runK=0.6

0

Tee — through branchK=1.8

0

Valves

Globe valve (full open)K=10

0

Butterfly valveK=0.6

0

Check valve — swingK=2.5

0

Foot valve / strainerK=15

0

Entries/Exits

Sharp-edged entryK=0.5

0

Sharp exitK=1

0

Other

Strainer / Y-filterK=2

0

Orifice plate (β=0.7)K=1.8

0

4Pump & Energy

Efficiency η (%)

Add. static head (m)

Run hours / yr

Energy cost (R/kWh)

5NPSH / Cavitation check

6Cost Estimator

Enter fluid, flow rate, and pipe dimensions

Results update live as you type