The Ohnesorge number, Oh, is a dimensionless number that relates the viscous forces to inertial and surface tension forces.
It is defined as:
Where
- μ is the liquid viscosity
- ρ is the liquid density
- σ is the surface tension
- L is the characteristic length scale (typically drop diameter)
- Re is the Reynolds number
- We is the Weber number
Read more about Ohnesorge Number: Applications
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