ISSN: 2375-3846
American Journal of Science and Technology  
Manuscript Information
 
 
Flow Study over Bluff Bodies Based on Visualization Technique
American Journal of Science and Technology
Vol.4 , No. 6, Publication Date: Jan. 8, 2018, Page: 97-104
50 Views Since January 8, 2018, 58 Downloads Since Jan. 8, 2018
 
 
Authors
 
[1]    

Ángel Antonio Rodríguez-Sevillano, Universidad Politécnica de Madrid, Department of Aircraft and Space Vehicles, School of Aeronautics and Space Engineering, Madrid, Spain.

[2]    

Miguel Ángel Barcala-Montejano, Universidad Politécnica de Madrid, Department of Aircraft and Space Vehicles, School of Aeronautics and Space Engineering, Madrid, Spain.

[3]    

Rafael Bardera-Mora, National Institute for Aerospace Technology (INTA), Torrejón de Ardoz, Spain.

[4]    

Jonás Batuecas-Fuejo, Universidad Politécnica de Madrid, Department of Aircraft and Space Vehicles, School of Aeronautics and Space Engineering, Madrid, Spain.

 
Abstract
 

Flow visualization is a very important part of the study of fluid dynamics processes analyzed in many fields of physics and engineering. The present study explores flow visualization experiment technique applied to blunt shaped bluff bodies placed inside towing tank. Vortex shedding in circular cylinders has been studied in depth, being able to visualize the classical von Kármán vortex street. Moreover, the vortex shedding in cylinders of square section has been studied so that the differences between bodies with different section can be compared. A comparison between theoretical and experimental values of vortex shedding frequencies has been obtained; a high correlation with them shows the appropriate experimental procedure. Finally, this paper tries to advocate the use of the towing tank technique as a method to support the theoretical lectures related with some fluid mechanics concepts quite difficult to understand.


Keywords
 

Flow Visualization, Bluff Bodies, Towing Tank, Fluid Mechanics Visualization, von Kármán Vortex Street


Reference
 
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Lienhard, J. H. (1966). Synopsis of lift, drag, and vortex frequency data for rigid circular cylinders (Vol. 300). Technical Extension Service, Washington State University.





 
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