Modeling of acoustic field for a parametric focusing source using the spheroidal beam equation

• Autorzy: Yu L. , Li J. , Shi C.
• Języki publikacji: EN

Abstrakty

EN

A theoretical model of acoustic field for a parametric focusing source on concave spherical surface is proposed. In this model, the source boundary conditions of the Spheroidal Beam Equation (SBE) for difference frequency wave excitation were studied. Propagation curves and beam patterns for difference frequency component of the acoustic field are compared with those obtained for Khokhlov-Zabolotskaya-Kuznetsov (KZK) model. The results demonstrate that the focused parametric model of SBE is good valid for a large aperture angle in the strongly focused acoustic field. It is also investigated that high directivity and good focal ability with the decreasing of downshift ratio and the increasing of half-aperture angle for the focused parametric model of SBE

• Wydawca: -
• Czasopismo: Polish Maritime Research
• Rocznik: 2015
• Tom: 22
• Numer: Special Issue S1
• Opis fizyczny: p.43-47,fig.,ref.

Twórcy

autor

Yu L.

• Department of Navigation Technology, Shanghai Maritime University, 200136 Shanghai, China

autor

Li J.

• College of Ocean Science and Engineering, Shanghai Maritime University, 200136 Shanghai, China

autor

Shi C.

• Department of Navigation Technology, Shanghai Maritime University, 200136 Shanghai, China

Bibliografia

• 1. D Boulinguez, A Quinquis, 3-D underwater object recognition. IEEE Journal of Oceanic Engineering, 2002, 27(4), 814-829.
• 2. E Kozaczka, G Grelowska, S Kozaczka, and W Szymczak, Detection of Objects Buried in the Sea Bottom with the Use of Parametric Echosounder. Archives of Acoustics, 2013, 38(1), 99-104.
• 3. J. Naze Tjфtta, S. Tjфtta and E.H. Vefring, Effects of focusing on the nonlinear interaction between two collinear finite amplitude sound beams, J.Acoust.Soc.Am. 1991, 89 (3), 1017-1027.
• 4. J. Naze Tjфtta, S. Tjфtta, and E.H. Vefring, Propagation and interaction of two collinear finite amplitude sound beams, J.Acoust.Soc.Am. 1990, 88 (6), 2859-2869.
• 5. J. Wunderlich, S. Müller, High-resolution sub-bottom profiling using parametric acoustics. International Ocean Systems, 2003, 7(4), 6-11.
• 6. P.J. Westervelt, Parametric Acoustic Array. J.Acoust.Soc. Am. 1963, 35(4), 535-537.
• 7. R.M. Xia, W.D. Shou, G.P. Chen and M,D. Zhang, The further study of the spheroidal beam equation for focused finite-amplitude sound beams, J.Comput. Acoust. 2003, 11 (1), 47-53.
• 8. S.Y. Qian, T. Kamakura and M. Akiyama, Simulation of sound field in a tissue medium generated by a concave spherically annular transducer, Ultrasonics, 2006, 44 (1), 271-274.
• 9. T. Kamakura, N. Hamada, K. Aoki, and Y. Kumamoto, Nonlinearly generated spectral components in the nearfield of a directive sound source. J.Acoust.Soc.Am. 1989, 85 (6), 2331-2337.
• 10. T. Kamakura, T. Ishiwata and K. Matsuda, Model equation for stringly focused finite-amplitude sound beams, J.Acoust.Soc.Am. 2000, 107 (6), 3035-3046.

Identyfikatory

DOI

10.1515/pomr-2015-0031