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Rolling stones and turbulent eddies: why the bigger live longer and travel farther.

Publication ,  Journal Article
Bejan, A
Published in: Scientific reports
February 2016

Here we report the discovery that even the simplest, oldest and most prevalent forms of evolutionary movement--rolling bodies and whirls of turbulence--exhibit the same body-size effect on life time and life travel as the evolutionary movement united by the body-size effect so far: animals, rivers, vehicles, jets and plumes. In short, the bigger should last longer and travel farther. For rolling bodies, the life span (t) and the life travel (L) should increase with the body mass (M) raised to the powers 1/6 and 1/3, respectively. The number of rolls during this movement is constant, independent of body size. For an eddy of turbulence, t should increase with the eddy mass (M) raised to the power 2/3, while L should increase with M(2/3) times the bulk speed of the turbulent stream that carries the eddy. The number of rolls during the eddy life span is a constant independent of eddy size.

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Published In

Scientific reports

DOI

EISSN

2045-2322

ISSN

2045-2322

Publication Date

February 2016

Volume

6

Start / End Page

21445
 

Citation

APA
Chicago
ICMJE
MLA
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Bejan, A. (2016). Rolling stones and turbulent eddies: why the bigger live longer and travel farther. Scientific Reports, 6, 21445. https://doi.org/10.1038/srep21445
Bejan, Adrian. “Rolling stones and turbulent eddies: why the bigger live longer and travel farther.Scientific Reports 6 (February 2016): 21445. https://doi.org/10.1038/srep21445.
Bejan, Adrian. “Rolling stones and turbulent eddies: why the bigger live longer and travel farther.Scientific Reports, vol. 6, Feb. 2016, p. 21445. Epmc, doi:10.1038/srep21445.

Published In

Scientific reports

DOI

EISSN

2045-2322

ISSN

2045-2322

Publication Date

February 2016

Volume

6

Start / End Page

21445