Kolmogorov length scale: Difference between revisions
From Atomix
No edit summary |
No edit summary |
||
| (2 intermediate revisions by one other user not shown) | |||
| Line 1: | Line 1: | ||
{{DefineConcept | {{DefineConcept | ||
|parameter_name=Kolmogorov length scale | |parameter_name=Kolmogorov length scale | ||
|description=Kolmogorov length scale <math> | |description=Kolmogorov length scale <math>L_k</math> | ||
| | |article_type=Concept | ||
}} | }} | ||
<math> | <math>L_k=\left(\frac{\nu^3}{\varepsilon}\right)^{1/4}</math> | ||
where <math>\nu</math> is the kinematic viscosity of the fluid and <math>\varepsilon</math> is the rate of dissipation of turbulence kinetic energy by viscous friction. It | where <math>\nu</math> is the kinematic viscosity of the fluid and <math>\varepsilon</math> is the rate of dissipation of turbulence kinetic energy by viscous friction. It provides the order of magnitude of the scale at which molecular viscosity smoothens (or erases) the fluctuations of velocity. | ||
Latest revision as of 19:48, 1 December 2021
| Short definition of Kolmogorov length scale (Kolmogorov length scale) |
|---|
| Kolmogorov length scale [math]\displaystyle{ L_k }[/math] |
This is the common definition for Kolmogorov length scale, but other definitions maybe discussed within the wiki.
[math]\displaystyle{ L_k=\left(\frac{\nu^3}{\varepsilon}\right)^{1/4} }[/math]
where [math]\displaystyle{ \nu }[/math] is the kinematic viscosity of the fluid and [math]\displaystyle{ \varepsilon }[/math] is the rate of dissipation of turbulence kinetic energy by viscous friction. It provides the order of magnitude of the scale at which molecular viscosity smoothens (or erases) the fluctuations of velocity.
