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Dispersivity Tensor for Turbulent Uniform Channel Flow
The turbulent mixing of a solute in a stream flow is described with the aid of the dispersivity tensor. In a two-dimensional pipe or wide channel flow only the radial, or vertical, dispersivity coefficient is significant and is usually determined through the Reynolds analogy. The analogy is extended to a three-dimensional (i.e., channel of arbitrary section) uniform flow. It is shown that the mixing length theory leads to the representation of the dispersivity tensor in the terms of only two distinct coefficients: (1) A coefficient representing mixing normal to isovels which may be found through Reynolds analogy; and (2) a lateral dispersivity coefficient which has to be determined from dispersivity measurements.
Dispersivity Tensor for Turbulent Uniform Channel Flow
The turbulent mixing of a solute in a stream flow is described with the aid of the dispersivity tensor. In a two-dimensional pipe or wide channel flow only the radial, or vertical, dispersivity coefficient is significant and is usually determined through the Reynolds analogy. The analogy is extended to a three-dimensional (i.e., channel of arbitrary section) uniform flow. It is shown that the mixing length theory leads to the representation of the dispersivity tensor in the terms of only two distinct coefficients: (1) A coefficient representing mixing normal to isovels which may be found through Reynolds analogy; and (2) a lateral dispersivity coefficient which has to be determined from dispersivity measurements.
Dispersivity Tensor for Turbulent Uniform Channel Flow
Dagan, Gedeon (author)
Journal of the Hydraulics Division ; 95 ; 1699-1712
2021-01-01
141969-01-01 pages
Article (Journal)
Electronic Resource
Unknown
A mathematical and computational study of the dispersivity tensor in anisotropic porous media
| British Library Online Contents | 2013