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ISSN 打印: 1065-3090

ISSN 在线: 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

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AIRFOIL CHARACTERISTICS AT A LOW REYNOLDS NUMBER

卷 7, 册 3, 2000, 10 pages
DOI: 10.1615/JFlowVisImageProc.v7.i3.20
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摘要

Corrugation and leading-edge sharpness enhance the airfoils of insect wings and model airplanes, respectively. To clarify this enhancement, the effects of corrugation and leading-edge sharpness on airfoil characteristics at low Reynolds number (4 × 103) were investigated by measuring the hydrodynamic force acting on such airfoils and by flow visualization.
Our results show that either proper corrugation or a sharp leading edge can improve the airfoil characteristics—that is, increase the maximum lift-to-drag ratio |(CL /CD)max|. This increase in |(CL /CD)max| is due not to an increase in lift, but to a decrease in drag. Furthermore, this decrease in drag is strongly related to the thickness of the vortex region on the upper surface. These results can explain the advantage of corrugation seen in insect wings and that of the sharp leading edge seen in model-airplane wings.

对本文的引用
  1. Levy David-Elie, Seifert Avraham, Parameter study of simplified dragonfly airfoil geometry at Reynolds number of 6000, Journal of Theoretical Biology, 266, 4, 2010. Crossref

  2. Liu Tianshu, Montefort J., Liou W., Pantula S., Effects of Flexible Fin on Low-Frequency Oscillation in Post-Stalled Flows, AIAA Journal, 48, 6, 2010. Crossref

  3. Jabbari Hossein, Esmaeili Ali, Rabizadeh Shayan, Phase portrait analysis of laminar separation bubble and ground clearance interaction at critical (low) Reynolds number flow, Ocean Engineering, 238, 2021. Crossref

  4. Grande Edoardo, Romani Gianluca, Ragni Daniele, Avallone Francesco, Casalino Damiano, Aeroacoustic Investigation of a Propeller Operating at Low Reynolds Numbers, AIAA Journal, 60, 2, 2022. Crossref

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