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Turbulent-Induced Noise around a Circular Cylinder Using Permeable FW-H Method

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http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53667#.VM8sSSzQrzF

Author(s)  
Woen-Sug Choi1*, Suk-Yoon Hong1, Jee-Hun Song2, Hyun-Wung Kwon3, Chul-Min Jung4, Tae-Gyoung Kim1

Affiliation(s)
1Departmentof Naval Architecture and Ocean Engineering, Seoul National University, Seoul, Republic of Korea.
2Department of Naval Architecture and Ocean Engineering, Chonnam National University, Yeosu, Republic of Korea.
3Department of Naval Architecture and Ocean Engineering, Koje College, Koje, Republic of Korea.
4Advanced Naval Technology Center, NSRDI, Agency for Defense Development, Chinhae, Republic of Korea.

ABSTRACT
Varieties of research on turbulent-induced noise are conducted with combinations of acoustic analogy methods and computational fluid dynamic methods to analyse efficiently and accurately. Application of FW-H acoustic analogy without turbulent noise is the most popular method due to its calculation cost. In this paper, turbulent-induced noise is predicted using RANS turbulence model and permeable FW-H method. For simplicity, noise from 2D cylinder is examined using three different methods: direct method of RANS, FW-H method without turbulent noise and permeable FW-H method which can take into account of turbulent-induced noise. Turbulent noise was well predicted using permeable FW-H method with same computational cost of original FW-H method. Also, ability of permeable FW-H method to predict highly accurate turbulent-induced noise by applying adequate permeable surface is presented. The procedure to predict turbulent- induced noise using permeable FW-H is established and its usability is shown.

KEYWORDS
Turbulent-Induced Noise, Circular Cylinder, Acoustic Analogy, FW-H Method, Permeable FW-H Method

Cite this paper
Choi, W. , Hong, S. , Song, J. , Kwon, H. , Jung, C. and Kim, T. (2015) Turbulent-Induced Noise around a Circular Cylinder Using Permeable FW-H Method. Journal of Applied Mathematics and Physics, 3, 161-165. doi: 10.4236/jamp.2015.32025.

References
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