The evaluation of the coefficient of eddy diffusivity
β Scribed by Richmond W. Longley
- Publisher
- John Wiley and Sons
- Year
- 1944
- Tongue
- English
- Weight
- 382 KB
- Volume
- 70
- Category
- Article
- ISSN
- 0035-9009
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β¦ Synopsis
Abstract
Observational data have been substituted into a modified form of the equation of heat transfer. By a statistical analysis of the resultant equations, values of the coefficient of eddy diffusivity for various stable lapse rates are obtained. It was found necessary in the analysis to define a βpoint of best fit,β and to derive the normal equations for obtaining this point.
π SIMILAR VOLUMES
## Abstract Two existing methods of deriving eddy diffusivity from measurements of turbulent energy are briefly reviewed, one based on the theory of the inertial subβrange and therefore concerned with highβfrequency energy, the other purely empirical and concerned with total energy. A third method,
## Abstract Methods of calculating the eddy diffusivity ΞΊ are discussed. It is shown that methods which assume that ΞΊ can be regarded as independent of the height, even through a shallow layer, lead to erroneous results: in consequence the frequent use in the literature of the approximate equation
Cg 2 Pz(Zs)