Time and length scales of turbulence: Difference between revisions
From Atomix
Creating new page to explain choice of equip set-up, filtering etc using turbulence scales |
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== High wavenumber limit== | == High wavenumber limit== | ||
For instance, the wavenumber (length scale) limits depend on the sought quantity <math>\varepsilon</math>, and also the kinematic viscosity. | |||
== Low wavenumber limit == | == Low wavenumber limit == | ||
Revision as of 18:33, 1 December 2021
The length and time scales of turbulence must be considered when analysing turbulence measurements. The scales at which the turbulence subranges, both the viscous and inertial subrange, exist depend on the flow properties.
High wavenumber limit
For instance, the wavenumber (length scale) limits depend on the sought quantity [math]\displaystyle{ \varepsilon }[/math], and also the kinematic viscosity.
Low wavenumber limit
Timescales
Can use the equation [math]\displaystyle{ \tau=(L^2/\varepsilon)^{1/3} }[/math]
