Reynoldsov broj: razlika između verzija

Uklonjeno 11 bajtova ,  prije 10 godina
m
r2.7.2) (robot mijenja: ar:عدد رينولدز; kozmetičke promjene
m (r2.7.1) (robot dodaje: no:Reynoldstall)
m (r2.7.2) (robot mijenja: ar:عدد رينولدز; kozmetičke promjene)
U [[mehanika fluida|mehanici fluida]] i [[aerodinamika|aerodinamici]], '''Reynoldsov broj''' je iznos odnosa [[inercija]]lnih [[sila]] (''v<sub>s</sub>&rho;ρ'') i [[viskoznost|viskoznih]] sila (''&mu;μ/L''), te on pokazuje relativnu bitnost ove dvije sile za date uslove strujanja.
 
== Definicija ==
* ''v''<sub>s</sub> brzina fluda u ms<sup>-1</sup>
* ''L'' karakteristična dužina m
* &mu;μ je (apsolutna) [[viskoznost]] [[fluid]]a Nsm<sup>-2</sup> ili Pa·s
* &nu;ν je kinematička viskoznost fluida, definisana kao &nu;ν = &mu;μ/&rho;ρ, u m<sup>2</sup>s<sup>-1</sup>
* &rho;ρ je [[gustoća]] fluida u kgm<sup>-3</sup>
 
== Tipične vrijednosti Reynoldsovog broja ==
* Osoba koja [[plivanje|pliva]] ~ 4×10<sup>6</sup>
* [[Plavi kit]] ~ 3×10<sup>8</sup>
* Veliki brod ([[RMS Queen Elizabeth 2]]) ~ 5&times;105×10<sup>9</sup>
 
== Također pogledajte ==
 
* [[Darcy-Weisbachova jednačina]]
* [[Hagen-Poiseuilleova jednačina]]
* [[Navier–Stokesove jednačine]]
* [[Reynoldsov transportni teorem]]
 
== Reference ==
{{Refspisak}}
* [http://158.110.32.35/download/CERN07/R_ARFM_90.pdf] Rott, N., “Note on the history of the Reynolds number,” Annual Review of Fluid Mechanics, Vol. 22, 1990, pp. 1–11.
* Zagarola, M.V. and Smits, A.J., “Experiments in High Reynolds Number Turbulent Pipe Flow.” AIAApaper #96-0654, 34th AIAA Aerospace Sciences Meeting, Reno, Nevada, January 15 - 18, 1996.
* Jermy M., “Fluid Mechanics A Course Reader,” Mechanical Engineering Dept., University of Canterbury, 2005, pp. d5.10.
* Hughes, Roger "Civil Engineering Hydraulics," Civil and Environmental Dept., University of Melbourne 1997, pp. 107-152
* Fouz, Infaz "Fluid Mechanics," Mechanical Engineering Dept., University of Oxford, 2001, pp96
* E.M. Purcell. "Life at Low Reynolds Number", American Journal of Physics vol 45, p. 3-11 (1977)[http://jilawww.colorado.edu/perkinsgroup/Purcell_life_at_low_reynolds_number.pdf]
* Truskey, G.A., Yuan, F, Katz, D.F. (2004). ''Transport Phenomena in Biological Systems'' Prentice Hall, pp. 7. ISBN-10: 0130422045. ISBN-13: 978-0130422040.
 
== Vanjski linkovi ==
 
* [http://web.ics.purdue.edu/~alexeenk/GDT/index.html Gas Dynamics Toolbox] Calculate Reynolds number for mixtures of gases using VHS model
* [http://www.calctool.org/CALC/eng/fluid/reynolds Browser-based Reynolds number calculator.]
 
 
[[Kategorija:Konvekcija]]
 
[[ar:رقمعدد رينولدز]]
[[be-x-old:Лік Рэйнальдса]]
[[bg:Критерий на Рейнолдс]]
66.768

izmjena