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Analysis of institutional authors

Perez-Rojas, LuisAuthorDiaz-Ojeda, H. R.Author

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June 22, 2020
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NUMERICAL INVESTIGATION OF VORTEX-INDUCED VIBRATION OF A VERTICAL RISER IN UNIFORM FLOW AT HIGH REYNOLDS NUMBERS

Publicated to:Journal Of Marine Science And Technology-Taiwan. 28 (1): 25-40 - 2020-02-01 28(1), DOI: 10.6119/JMST.202002_28(1).0004

Authors: Domingo, Jeronimo; Perez-Rojas, Luis; Diaz-Ojeda, H. R.;

Affiliations

1 ;‎ Univ Politecn Madrid UPM, Escuela Tecn Super Ingn Navales, Ave Arco Memoria 4, Madrid 28040, Spain - Author

Abstract

This work presents a numerical study on the vortex-induced vibration (VIV) phenomenon of synchronization of a vertical, flexible, circular cylinder with a length-to-diameter ratio of 475, being free to move along the in-line (IL) and cross-flow (CF) directions for Reynolds numbers of 42K, 84K and 126K. It is found that the dominant mode numbers, the maximum root mean square amplitudes, the dominant frequencies and the lift coefficient increase with the Reynolds number, but the drag coefficient decreases. The in-line response shows a main frequency component at twice the cross-flow frequency. At some Reynolds number value and riser span location, a third harmonic frequency component is observed in the CF response. The aims of this paper are to study the lock-in phenomenon and the effect of the flow-induced tension in the riser frequency spectrum. The lock-in analysis shows that when both the cross-flow riser movement and the velocity transversal component frequency values are the same, lock-in takes place. The lock-in is established at the vibration mode predominant frequency for the three Reynolds numbers. The results show also that, taking into account the tension produced by the flow, the vibration frequency spectrum will be calculated accurately. The drag force produces a flow-induced tension that makes the riser behave as a tension-dominated riser, even if the riser was not pre-tensioned.

Keywords

Cross-flowFlexible circular cylinderFluid-structure interaction (fsi)High reynolds numberIn-lineLong tensioned beamSimulationSynchronizationViv response

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Journal Of Marine Science And Technology-Taiwan, and although the journal is classified in the quartile Q4 (Agencia WoS (JCR)), its regional focus and specialization in Engineering, Multidisciplinary, 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 2025-07-28:

  • Scopus: 2

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 2025-07-28:

  • 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).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

    Leadership analysis of institutional authors

    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 (Domingo, Jeronimo) and Last Author (DIAZ OJEDA, HECTOR RUBEN).

    the author responsible for correspondence tasks has been Domingo, Jeronimo.