건물주변의 유동장 및 풍소음에 관한 수치해석적 연구
A Study on Numerical Simulation on Flow-fields & Wind-induced Noise around Buildings
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참고문헌
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초록
As residential buildings in urban areas are getting higher, there are many complaints about wind-induced noise generated by strong wind. Residents from surrounding high-rise buildings have expressed their fear of being disturbed by wind-induced noise (wind-structure interaction noise). This has become one of environmental problem to be solved. However, there are many difficulties in applying experiments on wind-induced noise problems. Those problems mainly caused by the following factors: (1) difficulties to distinguish between the natural wind and wind-induced noise, and (2) model scale’’s problem for Strouhal number and Reynolds number. Nevertheless, the effort to study and reduce on the wind-induced noise around building is still rare in Korea or even in the world. Previous researches related with wind-induced noises were mostly focused on aviation and machinery field. In this study the flow-fields are obtained from Large Eddy Simulation (LES) Smagorinsky turbulence model, and the wind induced noise predictions are computed using SYSNOISE Rev5.6Beta. The results were compared with the experiment. The comparison between experiment results and numerical simulation results showed the very similar trends for peak SPL were exhibited in various cases. In this study, Computational Aeroacoustic is known as a very useful tool mean on wind-induced noise for buildings.
Abstract
As residential buildings in urban areas are getting higher, there are many complaints about wind-induced noise generated by strong wind. Residents from surrounding high-rise buildings have expressed their fear of being disturbed by wind-induced noise (wind-structure interaction noise). This has become one of environmental problem to be solved. However, there are many difficulties in applying experiments on wind-induced noise problems. Those problems mainly caused by the following factors: (1) difficulties to distinguish between the natural wind and wind-induced noise, and (2) model scale’’s problem for Strouhal number and Reynolds number. Nevertheless, the effort to study and reduce on the wind-induced noise around building is still rare in Korea or even in the world. Previous researches related with wind-induced noises were mostly focused on aviation and machinery field. In this study the flow-fields are obtained from Large Eddy Simulation (LES) Smagorinsky turbulence model, and the wind induced noise predictions are computed using SYSNOISE Rev5.6Beta. The results were compared with the experiment. The comparison between experiment results and numerical simulation results showed the very similar trends for peak SPL were exhibited in various cases. In this study, Computational Aeroacoustic is known as a very useful tool mean on wind-induced noise for buildings.
참고문헌 (10)
- Kim, Y.D., "Experimental and Numerical Study on Wind- Induced Noise of Thin Columns", The Proceedings of 4Th International Conference on Advances in Wind and Structures (AWAS'08), pp.195~200 (2008)
- Kim, Y.D., "A Numerical Simulation on Flow-fields and Wind-induced Noise around Buildings and Thin Coulumns", The Proceedings of 4Th International Conference on Advances in Wind and Structures (AWAS'08), pp.231~248 (2008)
- Kim, S.N., "An Experimental Study on Wind-induced Noise in Slender Long Columns", Thesis, pp.2004
- Kim, Y.D., "Numerical Simulations on Flow & Sound Fields around Building by Wind", Proceedings of WEIK Symposium, pp.45~51 (2008)
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- Murakami, S., "Numerical Study on velocity-pressure field and wind forces for bluff bodies by k-epsilon, ASM and LES", Journal of Wind Engineering and Industrial Aerodynamics, pp.41~44 (1992)
- LMS SYSNOISE Rev 5.6, "Computational Vibro-Acoustics, On-line User's manual" (2002), LMS International NV
- Vambersky, J.N.J.A., "Wind-Induced Sound Produce by High Buildings", Website structured and Building Engineering Delft University of Technology
- Montavon, C., "Setting up aLES model in CFX-5.5", ALESSIA Deliverable D1.4 (2001)