International Journal of High-Rise Buildings (국제초고층학회논문집)

Council on Tall Building and Urban Habitat Korea (한국초고층도시건축학회)
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Experimental and Computational Investigation of Wind Flow Field on a Span Roof Structure

  • K B Rajasekarababu (AIWE-LAB, School of Civil and Environmental Engineering, Harbin Institute of Technology) ;
  • G Vinayagamurthy (Aerodynamics laboratory, Centre for Innovation and Product Development, Vellore Institute of Technology Chennai) ;
  • Ajay Kumar T M (Design & Engineering, L&T Energy Hydrocarbon) ;
  • Selvirajan S (Wind Engineering Lab, CSIR- Structural Engineering Research Center)
  • Published : 2022.12.01
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Abstract

Unconventional structures are getting more popular in recent days. Large-span roofs are used for many structures, such as airports, stadiums, and conventional halls. Identifying the pressure distribution and wind load acting on those structures is essential. This paper offers a collaborative study of computational fluid dynamics (CFD) simulations and wind tunnel tests for assessing wind pressure distribution for a building with a combined slender curved roof. The hybrid turbulence model, Improved Delayed Detached Eddy Simulation (IDDES), simulates the open terrain turbulent flow field. The wind-induced local pressure coefficients on complex roof structures and the turbulent flow field around the structure were thus calculated based upon open terrain wind flow simulated with the FLUENT software. Local pressure measurements were investigated in a boundary layer wind tunnel simultaneous to the simulation to determine the pressure coefficient distributions. The results predicted by CFD were found to be consistent with the wind tunnel test results. The comparative study validated that the recommended IDDES model and the vortex method associated with CFD simulation are suitable tools for structural engineers to evaluate wind effects on long-span complex roofs and plan irregular buildings during the design stage.

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Acknowledgement

The Science and Engineering Research Board fully funded this study, Department of Science and Technology, Government of India, through the Young Scientist Scheme, 2016-2019, under YSS/2015/001395. The authors were happy to acknowledge the Wind Engineering Lab of Structural Engineering Research Center-CSIR and the Aerodynamics laboratory of VIT Chennai for their unconditional support in conducting experiments at BLWT and the computational facility.

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