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International Journal of Fluid Mechanics Research

Publicado 6 números por año

ISSN Imprimir: 2152-5102

ISSN En Línea: 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

ON EQUILIBRIUM POINTS AND BIFURCATIONS IN FIXED EQUI-TRIANGULAR ARRANGEMENT OF THREE RANKINE VORTEX FILAMENTS

Volumen 46, Edición 2, 2019, pp. 127-149
DOI: 10.1615/InterJFluidMechRes.2018025272
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SINOPSIS

The present work analyzes the characteristics of bifurcations that arise in an equi-triangular arrangement of three stationary Rankine vortex filaments. The distances between the vortices are taken large enough so that effect of core deformation is negligible and the possibility of vortex merger does not arise. Kinematics of a fluid particle under the influence of vortex field has been formulated as a nonlinear dynamical system. The dynamical system possesses equilibrium points (EPs) that are "saddles" or "centers" with their number and location dependent on the relative strengths of the vortices. A change in the number of EPs is caused mainly by appearance or coalescence (merger) of the center and saddle pair. Initially, the two-vortex system has been investigated analytically to obtain the nature of EPs and resulting bifurcations and then the effect of a third vortex is investigated by varying its strength. Particle paths and interesting loci patterns for the EPs are observed and reported. Merger of two individual saddles into a double saddle is also observed in some cases. For various strength combinations and the same sense of rotation, all EPs lie inside the triangle formed by joining the centers of the vortices. However, for all the cases, the centers appear inside the vortex cores and saddles appear outside the vortex cores.

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