characteristic length#
$$L \sim \text L$$
A geometric scale representative of the problem: pipe diameter, boundary-layer thickness, chord length, or droplet radius. Its choice determines which physical effects are captured by a given dimensionless group.
Used in#
- Archimedes number
- Bejan number
- Biot number
- Bond number
- Courant number
- Ekman number
- Fourier number
- Froude number
- Galileo number
- Grashof number
- Helmholtz number
- Knudsen number
- Laplace number
- Mass Fourier number
- Mass Péclet number
- Nusselt number
- Ohnesorge number
- Péclet number
- Rayleigh number
- Reynolds number
- Richardson number
- Roshko number
- Rossby number
- Sherwood number
- Shields parameter
- Strouhal number
- Taylor number
- Weber number
- Womersley number