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International Journal of Fluid Mechanics Research

Publicou 6 edições por ano

ISSN Imprimir: 2152-5102

ISSN On-line: 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 Propagation in Human Bronchial Tree. Part I. Theory

Volume 28, Edição 3, 2001, 17 pages
DOI: 10.1615/InterJFluidMechRes.v28.i3.20
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RESUMO

Analysis of geometric, physical and wave parameters of a bronchial tree and its elements has been conducted. It is shown that in frequency range up to 1000 Hz all geometric parameters of airways (except the length of trachea) are sufficiently smaller than the wavelength of the sound, which propagates inside a bronchial tree. It is established that jump of a section in the point of articulation of adjacent airways can significantly affect the sound propagation in a bronchial tree. At the same time, bifurcation of the airways has almost no impact on this process. Acoustical and mathematical models of the airways (taking into account compliance of their walls) and of parts of articulation between them are stated. Corresponding boundary problems for the Helmholtz equation are solved. Obtained results allowed us to develop an algorithm for general solving for the problem of wave propagation in the bronchial tree.

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