eddy diffusivity

eddy diffusivity

[′ed·ē di‚fyü′siv·əd·ē]
(fluid mechanics)
The exchange coefficient for the diffusion of a conservative property by eddies in a turbulent flow. Also known as coefficient of eddy diffusion; eddy-diffusion coefficient.
References in periodicals archive ?
z] are the cartesian components of eddy diffusivity and u, [upsilon], w are the cartesian components of wind speed, where x, y are cartesian horizontal distance and z is the height above ground surface.
However, these solutions are restricted to the specific case in which the source is located at the ground level and/or with restrictions to the wind speed and eddy diffusivity vertical profiles.
There are two approaches such as the eddy diffusivity model and the surface renewal model which is widely used to model heat transfer at wall boundary (Tricoli, 1999).
5(b), which show calculated eddy diffusivity using the QETE model with both types of the surface boundary conditions.
An analytical model using eddy diffusivity is applied for predicting droplet concentration distribution and liquid film formation in a Venturi scrubber.
Keywords: venturi scrubber, eddy diffusivity, liquid film
Amount of liquid film is a complex function of gas velocity, liquid to gas ratio, liquid jet penetration and geometrical configuration of Venturi scrubber, and eddy diffusivity of droplets.
Both first order and TKE based closures are based on the concept of a mixing length, l, and require the computation of an eddy diffusivity, K, which in the latter schemes is a function of a prognostic TKE.
Eddy diffusivity and countergradient transport in the convective atmospheric boundary layer.
A combined Eddy Diffusivity Mass-Flux approach for the convective boundary layer.