z-logo
Premium
Determination of turbulence dissipation by Eulerian variance analysis
Author(s) -
Frenzen P.
Publication year - 1965
Publication title -
quarterly journal of the royal meteorological society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.744
H-Index - 143
eISSN - 1477-870X
pISSN - 0035-9009
DOI - 10.1002/qj.49709138705
Subject(s) - eulerian path , turbulence , dissipation , anemometer , variance (accounting) , mathematics , term (time) , function (biology) , statistical physics , mechanics , statistics , physics , thermodynamics , accounting , lagrangian , quantum mechanics , evolutionary biology , biology , business
Using a ‘variance function’ to specify the variance retained by a time series smoothed via running means, it is shown that the rate of turbulence dissipation can be computed from an Eulerian wind record supplied by a single, 3‐cup anemometer through the relation ϵ = (A) [( ‐)/(Tk 2/3 ‐ Tj 2/3 )] 3/2 Here A ≈ 3.3 derives from the Kolmogoroff law, Ū is the mean flow, and the numerator of the bracketed term represents the additional reduction in variance effected by increasing the averaging interval from Tj to Tk . Preliminary verifications of the relation are presented, and an experimental programme designed to use the method is outlined.

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here