 |
[email protected] |
 |
3275638434 |
 |
 |
| Paper Publishing WeChat |
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Peak Wind Force Coefficients of Porous Panels Mounted on the Roofs of High-Rise Buildings
Tomoko Aihara1 and Yasushi Uematsu2
Full-Text PDF
XML 11 Views
DOI:10.17265/1934-7359/2025.06.002
1. Taisei Advanced Center of Technology, TAISEI CORPORATION, Yokohama 245-0051, Japan
2. New Industry Creation Hatchery Center, Tohoku University, Sendai 980-8579, Japan
Wind tunnel experiment and CFD (computational fluid dynamics) simulation with LES (large eddy simulation) have been conducted to investigate the characteristics of peak wind force coefficients of porous panels mounted on the roofs of high-rise buildings. First, aerodynamic modelling of porous panels was discussed. The relation between pressure loss coefficient and porosity was obtained. Then, a wind tunnel experiment was conducted to measure the wind forces (net wind pressures) acting on solid and porous panels mounted on the roof of a high-rise building. Because it was difficult to measure the pressures on both sides of thin, porous panel at the same location simultaneously, we proposed to use the roof edge pressures near the panel for the panel’s inside-surface pressures. This experimental method was validated by a CFD simulation reproducing the wind tunnel experiment. The characteristics of peak wind force coefficients of porous panels mounted on the roofs of high-rise buildings were made clear. Finally, positive and negative peak wind force coefficients for designing the rooftop porous panels were proposed.
Rooftop panel, porosity, peak wind force coefficient, wind tunnel experiment, CFD, LES.
Journal of Civil Engineering and Architecture 19 (2025) 266-278
doi: 10.17265/1934-7359/2025.06.002
[1] Information Center for Building Administration, Japan Building Disaster Prevention Association. 2020. Commentary on structural regulations of the building standard law of Japan. Tokyo: Japan Building Disaster Prevention Association. (in Japanese)
[2] Stathopoulos, T., Saathoff, P., and Du, X. 2002. “Wind Loads on Parapets.” Journal of Wind Engineering and Industrial Aerodynamics 90: 503-14.
[3] Ohtake, K. 2008. “Peak Wind Pressure Coefficients for Cladding of a Large Roof.” Summaries of Technical Papers of Annual Meeting, Architectural Institute of Japan, Structures I: 217-8. (in Japanese)
[4] Honda, H., Kurita, T., Katou, N., and Komi, T. 2015. “A Study of Peak Wind Force Coefficients for Screen Standing on Rooftop.” Summaries of Technical Papers of Annual Meeting, Architectural Institute of Japan, Structures I: 185-6. (in Japanese)
[5] Tagawa, Y., Kikuchi, H., and Tamura Y. 2016. “Characteristics of Peak Wind Force Coefficients Acting on Rooftop.” Summaries of Technical Papers of Annual Meeting Architectural Institute of Japan, Structures I: 215-6. (in Japanese)
[6] Itoh, Y., Kondo, K., Kikuchi, H., Nozu, T., Ohtake, K., Tanaka, H., Kawai, H., and Tamura, T. 2016. “Application of CFD Technique to Wind-Resistant Design of Buildings Part 2: Wind Tunnel Experiment for Office and Residential Type Tall Buildings.” Summaries of Technical Papers of Annual Meeting, Architectural Institute of Japan Structures I: 235-6. (in Japanese)
[7] Gandemer, J. 1981. “The Aerodynamic Characteristics of Windbreaks, Resulting in Empirical Design Rules.” Journal of Wind Engineering and Industrial Aerodynamics 7: 15-36.
[8] Letchford, C. W. 2001. “Wind Loads on Rectangular Signboards and Hoardings.” Journal of Wind Engineering and Industrial Aerodynamics 89: 135-51.
[9] Briassoulis, D., Mistriotis, A., and Giannoulis, A. 2010. “Wind Forces on Porous Elevated Panels.” Journal of Wind Engineering and Industrial Aerodynamics 98: 919-28.
[10] Giannoulis, A., Stathopoulos, T., Briassoulis, D., and Mistriotis, A. 2012. “Wind Loading on Vertical Panels with Different Permeabilities.” Journal of Wind Engineering and Industrial Aerodynamics 107-108: 1-16.
[11] Xu, M., Patruno, L., Lo, Y.-L., and Miranda, S. 2020. “On the Use of the Pressure Jump Approach for the Simulation of Separated External Flows around Porous Structures: A Forward Facing Step.” Journal of Wind Engineering and Industrial Aerodynamics 207: 104377.
[12] Tominaga, Y., and Shirzadi, M. 2022. “RANS CFD Modeling of the Flow around a Thin Windbreak Fence with Various Porosities: Validation Using Wind Tunnel Measurements.” Journal of Wind Engineering and Industrial Aerodynamics 230: 105176.
[13] Maruyama, T. 2008. “Large Eddy Simulation of Turbulent Flow around a Windbreak.” Journal of Wind Engineering and Industrial Aerodynamics 96: 1998-2006.
[14] Uematsu, Y., Sakurai, S., Miyamoto, Y., and Gavanski, E. 2013. “Wind Force Coefficients for Designing Porous Canopy Roofs.” Journal of Civil Engineering and Architecture 7 (9): 1047-55.
[15] Architectural Institute of Japan. 2015. Recommendations for Loads on Buildings. Tokyo: Architectural Institute of Japan.
[16] American Society of Civil Engineers. 2012. Wind Tunnel Testing for Buildings and Other Structures. Reston, VA: ASCE/SEI 49-12.
[17] Yoshikawa, M., and Tamura, T. 2013. “Evaluation of Fluctuating Wind Pressures on 3D Square Cylinder by Unstructured-Grid LES Formulation of LES Using Unstructured Grid System for Wind-Resistant Design of Buildings (Part 1).” Journal of Structural and Construction Engineering, Trans. AIJ 687: 913-21. (in Japanese)
[18] Yoshikawa, M., and Tamura, T. 2016. “Wind Load Estimation of Vertical Fins on Walls of High-Rise Building Formulation of LES Using Unstructured Grid System for Wind-Resistant Design of Buildings (Part 3).” J. Struct. Construct. Eng., Trans. AIJ 722: 665-74. (in Japanese)
[19] Okuda, Y., and Taniike, Y. 1993. “Conical Vortices over Side Face of a Three-Dimensional Square Prism.” Journal of Wind Engineering and Industrial Aerodynamics 50: 163-72.