File:Some Measurements of Atmospheric Turbulence (1921) (14770640321).jpg

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English:

Identifier: philtrans03439141 (find matches)
Title: Some Measurements of Atmospheric Turbulence
Year: 1921 (1920s)
Authors: Richardson, L.
Subjects: Proceedings of the Royal Society of London Philosophical Transactions of the Royal Society
Publisher: Royal Society of London

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Fig. 3. SOME MEASUREMENTS OF ATMOSPHERIC TURBULENCE. 25 The six observations of steamers smoke are put forward only as upper limits to theturbulence appropriate to the bare sea, for the steamer itself probably makesa considerable eddy. It would be desirable to classify the observed eddy-conductivity as a function offour independent variables; namely, the height, the vertical gradient of entropy, thevertical gradient of velocity and the character of the surface. Vertical gradient ofvelocity is suggested as an independent because it measures the only rate-of-mean look \ok ikm g 5
Text Appearing After Image:
p & t* *.** *«* t* liOOm ^4 *© J* a ^  »< «< .5^ ^ ^ lOrn . 3 1ni9 I eddy conductivity J 10 ( velocity at height; ol observation strain which attains a noticeable value in the free atmosphere, and because OsborneReynolds* has shown that the energy of the eddy motion comes from the workdone by the eddy-stresses upon the corresponding rates of mean strain. The observa-tions here presented are much too scanty for such a classification, but to render therelation to height visible, the effect of velocity has been removed, in one sense, bydividing each value of the eddy-conductivity by the velocity at that level. The * Lamb, Hydrodynamics/ IV. edition, § 369, equation (21).VOL. CCXXI.—A. E 26 MR. LEWIS F. RICHARDSON ON justification for this procedure is that Taylor has given reasons^ for supposing thatthe viscosity, and therefore also the conductivity, is proportional to the velocity.For comparison with the present observations, the diagram shows Taylors mea

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Author Richardson, L.
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  • bookid:philtrans03439141
  • bookyear:1921
  • bookdecade:1920
  • bookcentury:1900
  • bookauthor:Richardson__L_
  • booksubject:Proceedings_of_the_Royal_Society_of_London
  • booksubject:Philosophical_Transactions_of_the_Royal_Society
  • bookpublisher:Royal_Society_of_London
  • bookcontributor:
  • booksponsor:
  • bookleafnumber:25
  • bookcollection:philosophicaltransactions
  • bookcollection:additional_collections
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29 July 2014



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