Water Supercooled Vapor Pressure

Overview

Engineering reference data for Water Supercooled Vapor Pressure in fluid mechanics.

Key Formulas

Reynolds Number

$Re = \frac{\rho v D}{\mu}$

Ratio of inertial to viscous forces — determines flow regime.

Bernoulli's Equation

$P + \frac{1}{2}\rho v^2 + \rho g h = \text{const}$

Conservation of energy for steady, inviscid, incompressible flow.

Continuity Equation

$A_1 v_1 = A_2 v_2$

Conservation of mass for incompressible flow.

Darcy-Weisbach

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

Pressure drop due to friction in a pipe.

Variables

Symbol	Description	Unit
$Re$	Reynolds number	—
$\rho$	Fluid density	kg/m³
$v$	Flow velocity	m/s
$D$	Characteristic dimension	m
$\mu$	Dynamic viscosity	Pa·s
$P$	Pressure	Pa
$f$	Darcy friction factor	—

Vapor Pressure Data

Supercooling Properties

Water freezes at 273.15 K (0 °C, 32 °F) under standard pressure but can be supercooled without solidifying down to approximately 224.8 K (−48.3 °C, −55 °F) when pure and free of nucleation sites. This metastable state occurs due to the lack of crystallization nuclei.

Unit Conversion

For pressure unit conversions, use the following relationship:

$1 \text{ Pa} = 1.45 \times 10^{-4} \text{ psi (lbf/in²)}$

To convert from the table's kPa values to psi: $1 \text{ kPa} = 0.145 \text{ psi}$

Interactive Charts

References

• Original Source