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Wind and Structures
  Volume 24, Number 1, January 2017, pages 025-41
DOI: https://dx.doi.org/10.12989/was.2017.24.1.025
 


Wind pressures on different roof shapes of a finite height circular cylinder
Y. Ozmen and E. Aksu

 
Abstract
    The effects of finite cylinder free end shape on the mean and fluctuating wind pressures were investigated experimentally and numerically by using three different roof shapes: flat, conical and hemispherical. The pressure distributions on the roofs and the side walls of the finite cylinders partially immersed in a simulated atmospheric boundary layer have been obtained for three different roof shapes. Realizable k-e turbulence model was used for numerical simulations. Change in roof shapes has caused significant differences on the pressure distributions. When compared the pressure distributions on the different roofs, it is seen from the results that hemispherical roof has the most critical pressure field among the others. It is found a good agreement between numerical and experimental results.
 
Key Words
    finite cylinder; circular flat roof; conical roof; hemispherical roof; suction pressure; realizable k-
 
Address
Y. Ozmen: Department of Mechanical Engineering, Karadeniz Technical University, Trabzon 61080, Turkey
E. Aksu: Naval Architecture and Marine Engineering, Karadeniz Technical University, Trabzon 61080, Turkey
 

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