Editing Mean flow

In [[fluid dynamics]], the [[fluid]] flow is often decomposed into a '''mean flow''' and [[deviation (statistics)|deviation]]s from the [[mean]]. The [[averaging]] can be done either in space or in time, or by [[ensemble average|ensemble averaging]].

==Example==
Calculation of the mean flow may often be as simple as the [[mathematical mean]]: simply add up the given flow rates and then divide the final figure by the number of initial readings.

For example, given two [[Discharge (hydrology)|discharges]] (''Q'') of 3&nbsp;m³/s and 5&nbsp;m³/s, we can use these flow rates ''Q'' to calculate the mean flow rate ''Q''<sub>mean</sub>. Which in this case is ''Q''<sub>mean</sub>&nbsp;=&nbsp;4&nbsp;m³/s.

==See also==
* [[Generalized Lagrangian mean]]

==References==
* {{Citation | title=Wave interactions and fluid flows | first=Alex D. D. | last=Craik | publisher=Cambridge University Press | year=1988 | isbn=978-0-521-36829-2 }}
* {{Citation | title=A first course in turbulence | first1=Hendrik | last1=Tennekes | author1-link=Hendrik Tennekes | first2=John L. | last2=Lumley | author2-link=John L. Lumley | publisher=MIT Press | year=1972 | isbn=978-0-262-20019-6 }}


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[[Category:Fluid dynamics]]