| Vol. - No. | Vol.11 - No.4 |
|---|---|
| Date | Dec., 2022 |
| Title | Experimental and Computational Investigation of Wind Flow Field on a Span Roof Structure |
| Author | K B Rajasekarababu1, G Vinayagamurthy2+, and Ajay Kumar T M3 , Selvirajan S4 |
| Institutions |
1AIWE-LAB, School of Civil and Environmental Engineering, Harbin Institute of Technology,Shenzhen 518055, China 2Aerodynamics laboratory, Centre for Innovation and Product Development, Vellore Institute ofTechnology Chennai, India 3Assistant Manager, Design & Engineering, L&T Energy Hydrocarbon, India 4Wind Engineering Lab, CSIR- Structural Engineering Research Center, India |
| 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. |
| Keyword | Large span roofs, Local pressure coefficient, Wind pressure coefficients, IDDES CFD, Terrain wind flow |
| PP. | PP.287~300 |
| Paper File |
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