Propane - Prandtl Number vs. Temperature and Pressure
Calculate the Prandtl Number for Propane based on temperature and pressure. The Prandtl number (Pr) is a dimensionless number approximating the ratio of momentum diffusivity (kinematic viscosity) to thermal diffusivity, commonly used in heat transfer and convection calculations. Calculated using: Pr = μ cp / k, where μ is dynamic viscosity, cp is specific heat, and k is thermal conductivity.
About Prandtl Number
The Prandtl Number (Pr) is a dimensionless number that approximates the ratio of:
- Momentum diffusivity (kinematic viscosity) to thermal diffusivity
Formula
Pr = μ cp / k
Where:
- μ = Absolute or dynamic viscosity (kg/(m·s))
- cp = Specific heat (J/(kg·K))
- k = Thermal conductivity (W/(m·K))
Applications
The Prandtl number is commonly used in:
- Heat transfer calculations
- Free and forced convection analysis
- Thermal boundary layer studies
- Fluid dynamics simulations
Propane Properties
For propane (C₃H₈), the Prandtl number varies with:
- Temperature: Generally decreases with increasing temperature in the gas phase
- Pressure: Shows more complex behavior, with values changing based on the thermodynamic state
The data provided covers propane in liquid, gas, and supercritical phases across a wide range of temperatures and pressures.