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Grant support

This work was supported by the Coturb project of the European Research Council, and performed in part during the 2017 Turbulence Summer Workshop at the UPM. The stay of Mr. Osawa at Madrid was partially funded by the Erasmus Mundus EASED programme (Grant 2012-5538/004-001) coordinated by CentraleSupelec. We are grateful to Dr. Lozano-Duran for his careful refereeing of an initial version of this manuscript.

Analysis of institutional authors

Osawa, KosukeAuthorJimenez, JavierAuthor

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Proceedings Paper

Intense structures of different momentum fluxes in turbulent channels

Publicated to:Journal Of Physics: Conference Series. 1001 (UNSP 012003): - 2018-04-12 1001(UNSP 012003), DOI: 10.1088/1742-6596/1001/1/012003

Authors: Osawa, Kosuke; Jimenez, Javier;

Affiliations

Tokyo Inst Technol, Dept Mech & Aerosp Engn, Meguro Ku, 2-12-1 Ookayama, Tokyo, Japan - Author
Univ Politecn Madrid, Sch Aeronaut, E-28040 Madrid, Spain - Author

Abstract

The effect of different definitions of the momentum flux on the properties of the coherent structures of the logarithmic region of wall-bounded turbulence is investigated by comparing the structures of intense tangential Reynolds stress with those of the alternative flux proposed in [Jimenez (2016) J. Fluid Mech. 809:585]. Despite the fairly different statistical properties of the two flux definitions, it is found that their intense structures show many similarities, such as the dominance of 'wall-attached' objects, and geometric self-similarity. However, the new structures are wider, although not taller, than the classical ones, and include both high- and low-momentum regions within the same object. It is concluded that they represent the same phenomenon as the classical group of a sweep, an ejection, and a roller, which should thus be considered as the fundamental coherent structure of the momentum flux. The present results suggest that the properties of these momentum structures are robust with respect to the definition of the fluxes.

Keywords

Coherent structuresLamb vectorWall

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Journal Of Physics: Conference Series, Q3 Agency Scopus (SJR), its regional focus and specialization in Physics and Astronomy (Miscellaneous), give it significant recognition in a specific niche of scientific knowledge at an international level.

Independientemente del impacto esperado determinado por el canal de difusión, es importante destacar el impacto real observado de la propia aportación.

Según las diferentes agencias de indexación, el número de citas acumuladas por esta publicación hasta la fecha 2025-07-01:

  • WoS: 1
  • Scopus: 1

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-07-01:

  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 5 (PlumX).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.

Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: Japan.

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (OSAWA, KOSUKE) and Last Author (JIMENEZ SENDIN, JAVIER).