m (Strouhal Number moved to Strouhal number)
Revision as of 03:33, 20 September 2005
The Strouhal number is a dimensionless parameter describing the oscillating frequency of a flow. Usually it is defined as:
where is the frequency of the flow (e.g. vortex shedding frequency), is a characteristic length scale of the flow and is a characteristic velocity.
The Strouhal Number is a function of the Reynolds number, typically between 20 < Re < 20,000.