О Дифракции Пилообразной Нелинейной Волны На Узком Круглом Отверстии В Экране

Гурбатов, С. Н.; Вьюгин, П. Н.; Дерябин, М. С.; Касьянов, Д. А.; Курин, В. В.; Тюрина, А. В.; Бахтин, В. К.

doi:10.31857/s0320791921030047

Акуст. ж.

2021

DOI: 10.31857/s0320791921030047

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О Дифракции Пилообразной Нелинейной Волны На Узком Круглом Отверстии В Экране

С. Н. Гурбатов¹,

П. Н. Вьюгин²,

М. С. Дерябин³

et al.

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2023

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Cited by 2 publications

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Peculiarities in the Transformation of the Profile of Acoustic Nonlinear Waves Reflected from a Stepped Structure

Bakhtin,

Gurbatov,

Deryabin

et al. 2023

Akustičeskij žurnal

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The article presents the results of studying the reflection of an intense acoustic beam from stepped structures. The case of high Reynolds numbers is considered, when a sawtooth wave profile formed in the incident beam, and an obstacle in the form of a step was located normal to the acoustic axis and behind the discontinuity coordinate. When reflected from the obstacle, the acoustic beam incident on it splits into two parts, between which there is a path difference, specified by the stepped structure itself. The experiment focused on obstacles that create a path difference between the two parts of the beam during reflection, equal to 0, λ/3, λ/2, λ, etc. A broadband membrane hydrophone was used to record the shape of the profile of nonlinear waves of the incident and reflected acoustic beams at an arbitrary spatial point. This made it possible to analyze the evolution of the beam shape with increasing distance from the obstacle, as well as to study its transverse structure. The effect of doubling the characteristic frequency of a signal as an acoustic beam is reflected from a stepped structure is shown, which creates a path difference of λ/2 between the two parts of the reflected beam. It is demonstrated that the dynamics of nonlinear effects in intense beams reflected from stepped structures is similar to the transformation of the profile of acoustic waves generated by dual-frequency pump signals.

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Peculiarities in the Transformation of the Profile of Acoustic Nonlinear Waves Reflected from a Stepped Structure

Bakhtin,

Gurbatov,

Deryabin

et al. 2023

Akustičeskij žurnal

View full text Add to dashboard Cite

show abstract

Analytical solution for the diffraging intense gaussian beam in the framework of a modular nonlinearity model

Gusev,

Zharkov

2023

Izvestiâ Akademii nauk SSSR. Seriâ fizičeskaâ

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О Дифракции Пилообразной Нелинейной Волны На Узком Круглом Отверстии В Экране

Cited by 2 publications

References 0 publications

Peculiarities in the Transformation of the Profile of Acoustic Nonlinear Waves Reflected from a Stepped Structure

Peculiarities in the Transformation of the Profile of Acoustic Nonlinear Waves Reflected from a Stepped Structure

Analytical solution for the diffraging intense gaussian beam in the framework of a modular nonlinearity model

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