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Wind induced pressure on 'Y' plan shape tall building

  • Mukherjee, Sourav (Bengal Engineering and Science University Shibpur) ;
  • Chakraborty, Souvik (Bengal Engineering and Science University Shibpur) ;
  • Dalui, Sujit Kumar (Faculty of Engineering (Civil), Bengal Engineering and Science University) ;
  • Ahuja, Ashok Kumar (Faculty of Engineering (Civil), Indian Institute of Technology Roorkee)
  • Received : 2013.09.28
  • Accepted : 2014.08.31
  • Published : 2014.11.25

Abstract

This paper presents a comprehensive study of pressure developed on different faces of a 'Y' plan shape tall building using both numerical and experimental means. The experiment has been conducted in boundary layer wind tunnel located at Indian Institute of Technology Roorkee, India for flow condition corresponding to terrain category II of IS:875 (Part 3) - 1987, at a mean wind velocity of 10 m/s. Numerical study has been carried out under similar condition using computational fluid dynamics (CFD) package of ANSYS, namely ANSYS CFX. Two turbulence models, viz., $k-{\varepsilon}$ and Shear Stress Transport (SST) have been used. Good conformity among the numerical and experimental results have been observed with SST model yielding results of higher magnitude. Peculiar pressure distribution on certain faces has been observed due to interference effect. Furthermore, flow pattern around the model has also been studied to explain the phenomenon occurring around the model.

Keywords

computational fluid dynamics (CFD);$k-{\varepsilon}$;shear stress transport (SST);interference effect;wind incidence angle;mean pressure coefficient

Acknowledgement

Supported by : Department of Science and Technology(DST)

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