Prandtl Number Calculator

The Prandtl number is a dimensionless quantity used in fluid mechanics and heat transfer to describe the ratio of momentum diffusivity to thermal diffusivity in a fluid. 

  • Pr is the Prandtl number,
  • μ∞ is the dynamic viscosity of the fluid at a reference temperature,
  • cp is the specific heat at constant pressure of the fluid at the same reference temperature,
  • k∞ is the thermal conductivity of the fluid at the reference temperature.

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