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Pressure Head Converter

Reference data and engineering information about pressure head converter for fluid mechanics applications.

pressureheadconverter

Overview

Engineering reference data for Pressure Head Converter 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

Data Table

12 rows
from / Multiply by data
col0
to
lb/in2
lb/in2
lb/ft2
Atm.
kg/cm2
kg/m2
in. water (68 oF)
ft. water (68 oF)
in. mercury, inHg (31 oF)
mm mercury, inHg (31 oF)
Bars

Source: engineeringtoolbox.com

References