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International Journal of Fluid Mechanics Research

年間 6 号発行

ISSN 印刷: 2152-5102

ISSN オンライン: 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

COMPUTATIONAL FLUID DYNAMICS METHOD FOR THE ANALYSIS OF HYDRODYNAMICS PERFORMANCE OF MANGROVE ROOT MODELS

巻 46, 発行 6, 2019, pp. 477-486
DOI: 10.1615/InterJFluidMechRes.2019024594
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要約

Mangroves play a prominent role in obstructing water currents in riverbanks, shorelines, and coastal areas. Mangrove roots have a significant contribution to the resiliency of the vegetation structure. In this work, the flow characteristics past a cluster of circular cylinders (patch), which represents the mangrove roots, are investigated. Numerical simulations were conducted for five patch porosities (φ = 86% to 96%) for Reynolds number ranging from 2000 to 10,000. The complex two-dimensional flow structure of the cylinder wake is reasonably captured and time-averaged streamwise velocity, vorticity, and turbulence intensity are presented. A comparison is made between flow around one cylinder and a patch of cylinders with the same diameter to determine the impact of the patch porosity. Based on the results, unlike for a canonical cylinder, the patch porosity gives a rise in the Strouhal number but drops drag coefficient. We found that blockage parameter for a patch decreases with porosity for all Reynolds numbers. A von Karman vortex sheet is predicted behind the patch with a periodicity which agrees well with experiment. In addition, the vorticity field for the least porous patch reveals a delay in the formation of von Karman vortex street due to the small vortices in the near wake, whereas the vortices evolve in the far wake and produce swirling flow.

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