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http://dx.doi.org/10.7837/kosomes.2014.20.6.752

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

Choi, Woen-Sug (Department of Naval Architecture and Ocean Engineering, Seoul National University)
Hong, Suk-Yoon (Department of Naval Architecture and Ocean Engineering, Seoul National University)
Song, Jee-Hun (Department of Naval Architecture and Ocean Engineering, Chonnam National University)
Kwon, Hyun-Wung (Department of Shipbuilding and Marine Engineering, Koje College)
Jung, Chul-Min (Advanced Naval Technology Center, NSRDI, Agency for Defense Development)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.20, no.6, 2014 , pp. 752-759 More about this Journal
Abstract
Varieties of research on turbulent-induced noise is conducted with combinations of acoustic analogy methods and computational fluid dynamic methods to analyze 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;
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