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International Journal of Fluid Mechanics Research
Главный редактор: Atle Jensen (open in a new tab)
Заместитель главного редактора: Valery Oliynik (open in a new tab)
Редактор-основатель: Victor T. Grinchenko (open in a new tab)

Выходит 6 номеров в год

ISSN Печать: 2152-5102

ISSN Онлайн: 2152-5110

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 1.1 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 1.3 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.0002 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.33 SJR: 0.256 SNIP: 0.49 CiteScore™:: 2.4 H-Index: 23

Indexed in

Sound Radiation by an Array Formed by Coaxial Cylindrical Piezoceramic Shells with the End Baffles

Том 32, Выпуск 5, 2005, pp. 588-633
DOI: 10.1615/InterJFluidMechRes.v32.i5.70
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Краткое описание

A problem on sound radiation by an array consisting of piezoceramic shells with the end baffles in the form of truncated spherical sectors is solved on the basis of the modified method of partial domains. The significant distinctions between the vibration velocities and radiated powers of the particular shells is shown in the case when all of them are excited by equal electric voltages, that is caused by interaction through the acoustic field. It is proved that at certain frequencies some shells may change their operation mode from power radiation to its absorption from the environment. The far field of sound radiation by the shell is studied and directivity patterns for the arrays with various properties of the surface baffles are calculated. It is found that the most effective baffles are those with completely soft surfaces. A problem on sound radiation by the array which shells are excited by periodic sequence of radio-pulses. It is shown that in the case when all the shells are supplied by equal radio-pulses time dependencies for the vibration velocities of the shells (within radio-pulse duration interval) essentially differ both from the exciting pulse and from each other. It is found that at pulse supply of the shells the pressure time evolution in the far field significantly depends on direction. The pronounced acoustic reverberation is discovered in pulse-to-pulse interval. Some specific techniques for controlling the array acoustic properties are considered.

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