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Dimensionless numbers

Péclet number (Pe)

Definition

The ratio of advective to diffusive transport, Pe = vL/D. High Pe means flow carries species faster than diffusion can mix them.

Calculate with the Diffusion time tool →

Related tools

Further reading

  • Dimensionless numbers cheat sheet — SemitreeVerify the current edition.
  • Diffusion & mixing cheat sheet — SemitreeVerify the current edition.