Advertisement

Across Wind Load Analysis Using CFD for Sustainable Design of Tall Structures

  • K. Shruti
  • P. N. RaoEmail author
  • G. R. Sabareesh
Conference paper
Part of the Sustainable Civil Infrastructures book series (SUCI)

Abstract

With the advent of tall and complex shaped structures combined with urbanization, the structural designers are posed with a greater challenge to design the structures sustainable to rapid environmental changes. During the design of tall structures, wind loads acting on them are a major factor that needs to be considered. As a pre-requisite, the designer should have the information regarding wind environment of the region, wind forces on the structures and the response of the structure under these forces.

For tall and slender structures, across wind effects are more predominant than along wind effects. Recommendations in building codes for across wind effects are very limited. Several experimental studies were made to determine the across wind effects on structures. As wind tunnel tests are costlier and time consuming, an alternative computational fluid dynamics (CFD) approach has been emerged out to study these across wind effects.

This paper discusses on the across wind effects on tall structures like rectangular buildings and cooling towers in presence of other interfering structure using CFD analysis in ANSYS fluent. Experimental data of Kim et al. (2015) has been adopted to model the geometry of the structure and to simulate the wind environment around the structure in ANSYS fluent. LES (Large eddy simulations) turbulence model is considered to simulate the desired flow parameters around the structure. This 3D CFD model is validated with the experimental result of Kim et al. (2015). Further, the same scheme has been extended to cooling towers. Across wind effects acting on rectangular buildings and cooling towers are evaluated for the two cases: a. Stand alone case, b. interfering case with the same terrain category. In this manner, the response of the tall structures to across wind loading is studied using computational approach.

References

  1. IS: 875 (Part 3): Indian Standard code of practice for design loads (other than Earthquake) for buildings and structures, Part 3 wind loads, Bureau of Indian Standards, New Delhi, India (1987)Google Scholar
  2. Kareem, A., Zhou, Y.: Gust loading factor—past, present and future. J. Wind Eng. Ind. Aerodyn. 91(12–15), 1301–1328 (2003)CrossRefGoogle Scholar
  3. Zhou, Y., Kareem, A., Gu, M.: Gust loading factors for design applications (1999). https://nathaz.nd.edu
  4. Zhou, Y., Kijewski, T., Kareem, A.: Along-wind load effects on tall buildings: comparative study of major international codes and standards. J. Struct. Eng. 128, 788–796 (2002)CrossRefGoogle Scholar
  5. Mendis, P., Ngo, T., Haritos, N., Hira, A., et al.: Wind Loading on Tall Buildings, EJSE Special Issue: Loading on Structures (2007)Google Scholar
  6. Patidar, B., Patil, A.R., Thiele, K., Mandal, S.: Across-wind loading for structures: an overview. In: Proceedings of 7th National Conference on Wind Engineering (NCWE 2014), Thapar University Patiala, 21–22 November 2014Google Scholar
  7. Revuz, J.: Numerical simulation of the wind flow around a tall building and its dynamic response to wind excitation [PhD Thesis], Univ. of Nottingham (2011)Google Scholar
  8. Cenek, P.D., Wood, G.H.: Designing Multi-storey Buildings for Wind Effects, Branz study report: Building Research Association of New Zealand, Report No. 25 (1990). ISSN 0113 3675Google Scholar
  9. Kijewski, T., Kareem, A.: Dynamic Wind Effects: A Comparative Study of Provisions in Codes and Standards with Wind Tunnel Data (2001). https://www3.nd.edu/~nathaz/journals/Dynamic_Wind_Effects.pdf
  10. Gu, M., Quan, Y.: Across-wind loads of typical tall buildings. J. Wind Eng. Ind. Aerodyn. 92, 1147–1165 (2004)CrossRefGoogle Scholar
  11. Gu, M.: Study on wind loads and responses of tall buildings and structures. In: Proceedings of the Seventh Asia-Pacific Conference on Wind Engineering, Taipei, Taiwan, 8–12 November 2009Google Scholar
  12. Tanaka, H., Tamura, Y., Ohtake, K., Nakai, M., Kim, Y.C.: Experimental investigation of aerodynamic forces and wind pressures acting on tall buildings with various unconventional configurations. J. Wind Eng. Ind. Aerodyn. 107–108, 179–191 (2012)CrossRefGoogle Scholar
  13. Vyavahare, A.Y., Godbole, P.N., Nikose, T.: Analysis of tall building for across wind response. Int. J. Civ. Struct. Eng. 2(3), 979–986 (2012)Google Scholar
  14. IS: 875 (Part 3): Wind Loads on Buildings and Structures—Proposed draft & Commentary, Document No.: IITK – GSDMA-Wind 02-V 5.0 (2011)Google Scholar
  15. Kareem, A.: United States Report for APEC-WW (2009). https://nathaz.nd.edu
  16. Blockena, B., Carmelieta, J., Stathopoulos, T.: CFD evaluation of wind speed conditions in passages between parallel buildings- effect of wall-function roughness modifications for the atmospheric boundary layer flow (2007)Google Scholar
  17. Kim, W., Tamura, Y., Yoshida, A.: Interference effects on aerodynamic wind forces between two buildings. J. Wind Eng. Ind. Aerodyn. 147, 186–201 (2015)CrossRefGoogle Scholar
  18. Ranka, S., Shingade, V.S.: Analytical and numerical analysis of wind load on tall buildings. Int. J. Sci. Eng. Technol. Res. (IJSETR), 5(11), November 2016. ISSN: 2278-7798Google Scholar
  19. Yan, Q., Li, D., Liu, K., Bowen, Y.: CFD/FEM based analysis framework for wind effects on tall buildings in urban areas, Second International Conference on Industrial Aerodynamics (ICIA 2017) (2017). ISBN: 978-1-60595-481-3Google Scholar
  20. Goudarzi, M.-A., Sabbagh-Yazdi, S.-R.: Modeling wind ribs effects for numerical simulation external pressure load on a cooling tower of KAZERUN power plant-IRAN. Wind Struct. 11(6), 479–496 (2008)CrossRefGoogle Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Department of Civil EngineeringBITS Pilani, Hyderabad CampusHyderabadIndia
  2. 2.Department of Mechanical EngineeringBITS Pilani, Hyderabad CampusHyderabadIndia

Personalised recommendations