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Nozzles Water Discharge Capacity

Reference data and engineering information about nozzles water discharge capacity for fluid mechanics applications.

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Overview

Engineering reference data for Nozzles Water Discharge Capacity in fluid mechanics.

Key Formulas

Reynolds Number

Re=ρvDμRe = \frac{\rho v D}{\mu}

Ratio of inertial to viscous forces — determines flow regime.

Bernoulli's Equation

P+12ρv2+ρgh=constP + \frac{1}{2}\rho v^2 + \rho g h = \text{const}

Conservation of energy for steady, inviscid, incompressible flow.

Continuity Equation

A1v1=A2v2A_1 v_1 = A_2 v_2

Conservation of mass for incompressible flow.

Darcy-Weisbach

ΔP=fLDρv22\Delta P = f \frac{L}{D} \frac{\rho v^2}{2}

Pressure drop due to friction in a pipe.

Variables

SymbolDescriptionUnit
ReReReynolds number
ρ\rhoFluid densitykg/m³
vvFlow velocitym/s
DDCharacteristic dimensionm
μ\muDynamic viscosityPa·s
PPPressurePa
ffDarcy friction factor

Unit Conversions

The following conversion factors are commonly used when working with nozzle water discharge calculations at a standard water temperature of 60°F (15.6°C).

Length Conversion

ImperialMetric
1 inch (in)25.4 mm

Pressure Conversions

UnitEquivalent
1 psi (lbf/in²)144 psf (lbf/ft²)
1 psi6,894.8 Pa (N/m²)
1 psi6.895 × 10⁻³ N/mm²
1 psi6.895 × 10⁻² bar
1 psi27.71 in H₂O at 61°F (16.7°C)
1 psi703.1 mm H₂O at 61°F (16.7°C)
1 psi2.0416 in mercury at 61°F (16.7°C)
1 psi51.8 mm mercury at 61°F (16.7°C)
1 psi703.6 kg/m²
1 psi0.06895 atm
1 psi2.307 ft H₂O

Flow Rate Conversions

UnitMetric Equivalent
1 US gallon/minute (gpm)6.30888 × 10⁻⁵ m³/s
1 gpm0.227 m³/h

These conversions assume a standard water temperature of 60°F (15.6°C). Water density and viscosity vary with temperature, which may affect discharge calculations at significantly different temperatures.

References