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Journal of Flow Visualization and Image Processing

Erscheint 4 Ausgaben pro Jahr

ISSN Druckformat: 1065-3090

ISSN Online: 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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FLOW HEMODYNAMICS WITHIN A BENT ASYMMETRIC STENOSED ARTERY

Volumen 26, Ausgabe 4, 2019, pp. 335-357
DOI: 10.1615/JFlowVisImageProc.2019031045
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ABSTRAKT

Plaque deposition on the arterial wall narrows down the arterial lumen, thus restricting blood flow and altering hemodynamics around the constriction. The bends in the arteries are believed to be potential sites of such deposits. In the present study, pulsatile flow in asymmetrically stenosed arterial models has been simulated numerically. The straight stenosed model is considered and is compared with 20°, 40°, and 60° bend stenosed models. Physiologically relevant inlet pulsatile waveform of Repeak = 300-800 and Wo = 7.62-15.24 is considered. Limited particle image velocimetry (PIV) experiments have also been performed for a 60° bend stenosed artery model to validate numerical results. In comparison to the straight stenosed tube an arterial bend (on the medial plane) reveals larger vortex patterns, diminishes the size of the secondary vortex on the outer wall, disturbed flow patterns in the post-stenotic region, and increased vortex strength (d2 values). Cross plane shows a large vortex strength during the late diastolic portion of the cycle, being indicative of strong three-dimensionality within the flow. With an increased bend angle (θ = 20-60°), these trends intensify in conjunction with higher wall shear stress (WSS) values being experienced at the throat and oscillatory wall loading (OSI ~ 0.5) prevailing along the post-stenotic portion. Time-averaged WSS reveals a large recirculation zone, which in turn indicates that a 60° stenosed bend is the most critical from the biomedical point of view.

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REFERENZIERT VON
  1. Usmani Abdullah Y., Muralidhar K., Unsteady Hemodynamics in Intracranial Aneurysms With Varying Dome Orientations, Journal of Fluids Engineering, 143, 6, 2021. Crossref

  2. Amir M., Usmani Abdullah Y., Varshney M., Anwer S. Fahad, Khan Saleem A., Islam Nazrul, Pasha Amjad Ali, Analysing Spatio-temporal flow hemodynamics in an artery manifesting stenosis, International Journal of Mechanical Sciences, 218, 2022. Crossref

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