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Roshko number

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Title: Roshko number  
Author: World Heritage Encyclopedia
Language: English
Subject: Dimensionless numbers in fluid mechanics, Strouhal number, Fluid dynamics, Dimensionless quantity, Anatol Roshko
Collection: Dimensionless Numbers of Fluid Mechanics, Fluid Dynamics
Publisher: World Heritage Encyclopedia

Roshko number

In fluid mechanics, the Roshko number (Ro) is a dimensionless number describing oscillating flow mechanisms. It is named after the American Professor of Aeronautics Anatol Roshko. It is defined as

\mathrm{Ro} = {f L^{2}\over \nu} =\mathrm{St}\,\mathrm{Re}



  • Olim, A. M.; Riethmuller, M. L.; Gameiro da Silva, M. C. (2002). "Flowfield characterisation in the wake of a low-velocity heated sphere anemometer".  
  • Ormieres, D.; Provansal, M. (1999). "Transition to turbulence in the wake of a sphere".  

External links

  • On the Development of Turbulent Wakes From Vortex Streets PhD. Thesis by Anatol Roshko (hosted on Caltech Site).
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