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Journal of Flow Visualization and Image Processing

年間 4 号発行

ISSN 印刷: 1065-3090

ISSN オンライン: 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

TRANSVERSE VORTEX ROLLS IN MIXED CONVECTIVE AIR FLOW DRIVEN BY A HEATED CIRCULAR PLATE EMBEDDED IN THE BOTTOM OF A HORIZONTAL FLAT DUCT

巻 13, 発行 1, 2006, pp. 15-30
DOI: 10.1615/JFlowVisImageProc.v13.i1.20
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要約

Experimental flow visualization has been conducted here to unravel the structure of the buoyancy-driven transverse vortex rolls (T-rolls) at low-Reynolds number mixed convective air flow through a horizontal flat duct with a heated circular plate embedded in the bottom of the duct for the Rayleigh number ranging from 3506 to 23,485. The results suggest that regular transverse vortices prevail in the duct core only in a certain range of the Rayleigh number with a very low Reynolds number (Re ≤ 12.1) and the vortex flow is characterized by the T-rolls moving over the heated plate enclosed by an incomplete circular roll. More specifically, the regular transverse vortex rolls are curved at the early stage of their initiation and are deformed to some degree due to the presence of the incomplete circular roll around the upstream edge of the heated plate. But in the exit half of the duct the T-rolls are nearly straight and they are almost spanwisely symmetric with respect to the vertical central plane. Besides, the transverse rolls get stronger and bigger during the downstream moving and they do not travel downstream at a constant speed. These characteristics are very different from the transverse vortex rolls induced in a duct with a uniformly heated bottom.

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