- Tytuł:
- Modeling of acoustic field for a parametric focusing source using the spheroidal beam equation
- Autorzy:
-
Yu, L.
Li, J.
Shi, C. - Powiązania:
- https://bibliotekanauki.pl/articles/258564.pdf
- Data publikacji:
- 2015
- Wydawca:
- Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
- Tematy:
-
parametric focusing source
difference frequency wave
SBE
acoustic field - Opis:
- 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.
- Źródło:
-
Polish Maritime Research; 2015, S 1; 43-47
1233-2585 - Pojawia się w:
- Polish Maritime Research
- Dostawca treści:
- Biblioteka Nauki
Artykuł