AutoEngCalc - Engineering Calculators

Pipe Sizing Calculator

Advanced tools for determining optimal pipe diameters, fluid velocity, and pressure drop. Calculate pipe parameters based on flow requirements.

Pipe Flow: Q=0.05 m³/s, D=150mm
Velocity: 2.83 m/s

Pipe Sizing Tools

Advanced tools for determining optimal pipe diameters, fluid velocity, and pressure drop

Pipe Parameters

Input basic pipe and fluid parameters for calculations

kg/m³

Velocity Calculation

Calculate pipe diameter based on target fluid velocity

Recommended Velocities
Fluid Type Velocity Range
Water (general service) 1-3 m/s (3-10 ft/s)
Water (pump suction) 0.6-1.2 m/s (2-4 ft/s)
Oil (pressure lines) 1.5-4.5 m/s (5-15 ft/s)
Steam (low pressure) 20-30 m/s (60-100 ft/s)
Air (compressed) 6-20 m/s (20-65 ft/s)

Pressure Drop Calculation

Calculate pipe diameter based on target pressure drop

Pipe Sizing Results

Fluid Velocity

-

m/s

Reynolds Number

-

Re

Flow Regime

-

Laminar/Transitional/Turbulent

Friction Factor

-

Darcy friction factor

Pressure Drop

-

Pa/m

Velocity Head

-

m of fluid

Recommended Schedule

-

Based on diameter and pressure

Flow Direction Pipe Section
Pipe Flow Visualization

Pipe Sizing Fundamentals

Fluid Velocity Considerations

Proper pipe sizing requires balancing velocity to avoid excessive pressure drop while preventing sedimentation at low velocities.

v = Q / A = 4Q / (πD²)

Where v is velocity (m/s), Q is flow rate (m³/s), A is cross-sectional area (m²), and D is pipe diameter (m).

Pressure Drop Calculations

The Darcy-Weisbach equation is the most accurate method for pressure drop calculation:

ΔP = f (L/D) (ρv²/2)

Where ΔP is pressure drop (Pa), f is friction factor, L is pipe length (m), D is pipe diameter (m), ρ is fluid density (kg/m³), and v is velocity (m/s).

Additional Fluid Flow Resources

Pipe Stress Analysis

Analyze pipe flexibility and supports

Flow Meter Selection

Choose appropriate flow measurement devices

Pump Sizing

Calculate pump requirements for flow

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