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Wind and Structures
  Volume 5, Number 1, January 2002, pages 15-24
DOI: http://dx.doi.org/10.12989/was.2002.5.1.015
 


A numerical study of the turbulent fluctuating flow around a square cylinder for different inlet shear
A.K.M. Sadrul Islam(Bangladesh) and R.G.M. Hasan(U.K.)

 
Abstract
    This paper reports the numerical calculations of uniform turbulent shear flow around a squarerncylinder. The predictions are obtained by solving the two-dimensional unsteady Navier-Stokes equations inrna finite volume technique. The turbulent fluctuations are simulated by the standard k- e model and one ofrnits variant which takes care of the realizability constraint in order to suppress the excessive generation ofrnturbulence in a stagnation condition. It has been found that the Strouhal number and the mean dragrncoefficient are almost unaffected by the shear parameter but the mean lift coefficient is increased. Thernpresent predictions are compared with available experimental data.
 
Key Words
    vortex shedding; shear flow; k- e variant; square cylinder.
 
Address
A.K.M. Sadrul Islam, Department of Mechanical Engineering, Bangladesh University of Engineering & Technology, Dhaka-1000, BangladeshrnR.G.M. Hasan, Computational Modelling Section, Health & Safety Laboratory, Buxton SK17 9JN, U.K.
 

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