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Analytical method for describing the paraxial region of finite amplitude sound beamsстатья
Информация о цитировании статьи получена из
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Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Hamilton M.F., Khokhlova V.A., Rudenko O.V.
- Журнал: Journal of the Acoustical Society of America
- Том: 101
- Номер: 3
- Год издания: 1997
- Издательство: Acoustical Society of America
- Местоположение издательства: United States
- Первая страница: 1298
- Последняя страница: 1308
- DOI: 10.1121/1.418158
- Аннотация: A special analytical method, which combines the parabolic approximation (KZ equation) with nonlinear geometrical acoustics, is developed to model nonlinear and diffraction effects near the axis of a finite amplitude sound beam. The corresponding system of nonlinear equations describing waveform evolution is derived. For the case of an initially sinusoidal wave radiated by a Gaussian source, an analytic solution of the coupled equations is obtained for the paraxial region of the beam. The axial solution is expressed in both the time and frequency domains, and is analyzed in detail for both unfocused and focused beams in their preshock regions. Harmonic propagation curves are compared with finite difference solutions of the KZ equation, and good agreement is obtained for a variety of parameter values. (C) 1997 Acoustical Society of America.
- Добавил в систему: Хохлова Вера Александровна