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Journal of Flow Visualization and Image Processing

Publicado 4 números por año

ISSN Imprimir: 1065-3090

ISSN En Línea: 1940-4336

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: 0.6 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.6 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: 0.00013 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: 0.14 SJR: 0.201 SNIP: 0.313 CiteScore™:: 1.2 H-Index: 13

Indexed in

POD ANALYSIS OF A BLOOMING JET AT A MODERATE REYNOLDS NUMBER

Volumen 25, Edición 3-4, 2018, pp. 359-382
DOI: 10.1615/JFlowVisImageProc.2018028216
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SINOPSIS

Jet flow in general has a wide range of applications, from propulsion of large aircraft to cooling of electronic circuit. Jet is also a source of noise which is needed to be controlled suitably and since large scales of fluid motion play a primary role in transport phenomena, selective manipulation of these structures is needed to achieve efficient control. The snapshot method of proper orthogonal decomposition (POD) has been utilized to analyze the fluctuating velocity vector for a blooming jet at the Reynolds number Re = 4300 and excitation frequency ratio Rf = 2.4. The baseline data is developed with the help of large eddy simulation (LES). Higher-order spatial and temporal discretizations are used to solve the governing equations. For Re = 4300, at least 96 snapshots are required for good spectral resolution. For capturing 90% of the total energy of the unsteady flow field, at least 40 modes are required. The eigenvalue/singular distributions for the forced jet show the formation of odd-even pairs of modes. The first pair itself contains the details of branching. In addition, higher-order modes capture the inherent jet instability mechanisms and related flow structures.

PALABRAS CLAVE: POD, LES, forced jet, blooming jet
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