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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

EVALUATION OF RADIAL VELOCITY FLUCTUATIONS IN TURBULENT PIPE FLOW BY MEANS OF AN ULTRASONIC DOPPLER VELOCIMETER

巻 10, 発行 1-2, 2003, 7 pages
DOI: 10.1615/JFlowVisImageProc.v10.i12.90
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要約

A still controversial issue in the open literature is that of the level of the kurtosis of the normal velocity fluctuations in the near-wall region of a turbulent shear flow. Numerical simulations often report values of the kurtosis considerably higher than experimental results and this fact is attributed by some authors to the different accuracy of the statistics computed from experimental series of data with respect to the numerical databases [1]. A question to be clarified is whether the high kurtosis values result from numerical artifacts of the computations or they are the manifestation of processes of physical nature related to the evolution of the turbulent flow structures near the wall [2]. In this work, experimental data of radial velocity fluctuations in turbulent pipe flow gathered with an Ultrasonic Doppler Velocimeter (UDV) are analyzed. One of the series of measurements shows a strong "sweep" of the radial velocity fluctuations and the evaluation of the related kurtosis gives a value considerably close to that reported by numerical simulations. This circumstance actually shows the occurrence of turbulent events near the wall and demonstrates the reliability of the Ultrasonic Doppler Velocimeter for turbulence measurements in fluid flows.

によって引用された
  1. Alfonsi Giancarlo, Numerical Simulations of Wave-Induced Flow Fields around Large-Diameter Surface-Piercing Vertical Circular Cylinder, Computation, 3, 3, 2015. Crossref

  2. Alfonsi Giancarlo, Ciliberti Stefania, Mancini Marco, Primavera Leonardo, Direct Numerical Simulation of Turbulent Channel Flow on High-Performance GPU Computing System, Computation, 4, 1, 2016. Crossref

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