[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.3744/JNAOE.2013.5.3.392

Development of indirect EFBEM for radiating noise analysis including underwater problems

Kwon, Hyun-Wung (Research Institute of Marine Systems Engineering (RIMSE), Seoul National University)
Hong, Suk-Yoon (Research Institute of Marine Systems Engineering (RIMSE), Seoul National University)
Song, Jee-Hun (Department of Naval Architecture & Ocean Engineering, Chonnam National University)

Publication Information

International Journal of Naval Architecture and Ocean Engineering / v.5, no.3, 2013 , pp. 392-403 More about this Journal

Abstract

For the analysis of radiating noise problems in medium-to-high frequency ranges, the Energy Flow Boundary Element Method (EFBEM) was developed. EFBEM is the analysis technique that applies the Boundary Element Method (BEM) to Energy Flow Analysis (EFA). The fundamental solutions representing spherical wave property for radiating noise problems in open field and considering the free surface effect in underwater are developed. Also the directivity factor is developed to express wave's directivity patterns in medium-to-high frequency ranges. Indirect EFBEM by using fundamental solutions and fictitious source was applied to open field and underwater noise problems successfully. Through numerical applications, the acoustic energy density distributions due to vibration of a simple plate model and a sphere model were compared with those of commercial code, and the comparison showed good agreement in the level and pattern of the energy density distributions.

Keywords

Energy flow boundary element method (EFBEM); Radiating noise; Free surface effect; Directivity factor;

Citations & Related Records

Reference

1	Wang, A., Vlahopoulos, N. and Wu, K., 2004. Development of an energy boundary element formulation for computing high-frequency sound radiation from incoherent intensity boundary conditions. Journal of Sound and Vibration, 278(1-2), pp.413-436. DOI ScienceOn
2	Wohlever, J.C. and Bernard, R.J., 1992. Mechanical energy flow models of rods and beams. Journal of Sound and Vibration, 153(1), pp.1-19. DOI ScienceOn
3	Belov, V.D., Rybak, S.A. and Tartakovskii, B.D., 1977. Propagation of vibrational energy in absorbing structures. Soviet Physics Acoustics, 23(2), pp.115-119.
4	Bouthier, O.M. and Bernhard, R.J., 1992. Models of space-averaged energetics of plates. American Institute of Aeronautics and Astronautics Journal, 30(3), pp.616-623. DOI
5	Cho, P.E., 1993. Energy flow analysis of coupled structures. PhD. Purdue University.
6	Cremer, L., Heckl, M. and Petersson, B.A.T., 2004. Structure-borne sound. Berlin: Springer-Verlag.
7	Lee, H.-W., Hong, S.-Y., Park, D.-H. and Kwon, H.-W., 2008. Energy flow boundary element method for vibration analysis of one and two dimension structures. Shock and Vibration, 15(1), pp.33-50. DOI
8	Nefske, D.J. and Sung, S.H., 1989. Power flow finite element analysis of dynamic systems : basic theory and application to beams. Journal of Vibration, Acoustics, Stress and Reliability in Design, 111(1), pp.94-100. DOI ScienceOn
9	Park, D.H., 1999. Vibration power flow analysis of coupled plates and box-type structures. M.S. Thesis. Seoul National University.
10	Park, D.-H., Hong, S.-Y., Kil, H.-G. and Jeon, J.-J., 2001. Power flow model and analysis of in-plane waves in finite coupled thin plates. Journal of Sound and Vibration, 244(4), pp.651-668. DOI ScienceOn
11	Seo, S.-H., Hong, S.-Y. and Kil, H.-G., 2003. Power flow analysis of reinforced beam-plate coupled structures. Journal of Sound and Vibration, 259(5), pp.1109-1129. DOI ScienceOn