Diffusion: Difference between revisions
From Glossary of Meteorology
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|Meaning=#The [[transport]] of matter solely by the [[random]] motions of individual molecules not moving together in coherent groups. | |||
|Explanation=Diffusion is a consequence of [[concentration gradients]].<br/> | |||
#The process of [[mixing]] fluid properties by molecular and turbulent motions.<br/> The process in [[turbulent flow]] is called turbulent or [[eddy diffusion]]. Diffusion by [[turbulence]] is much more rapid than diffusion by molecular motions. Turbulence with [[statistics]] independent of direction is called [[isotropic]]. In general, turbulence in the [[atmosphere]] and ocean is not isotropic. <br/>''See'' [[diffusivity]]. | |||
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Latest revision as of 12:19, 27 March 2024
- The transport of matter solely by the random motions of individual molecules not moving together in coherent groups.
Diffusion is a consequence of concentration gradients.
- The process of mixing fluid properties by molecular and turbulent motions.
The process in turbulent flow is called turbulent or eddy diffusion. Diffusion by turbulence is much more rapid than diffusion by molecular motions. Turbulence with statistics independent of direction is called isotropic. In general, turbulence in the atmosphere and ocean is not isotropic.
See diffusivity.
