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国际多尺度计算工程期刊

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ISSN 打印: 1543-1649

ISSN 在线: 1940-4352

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: 1.4 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 1.3 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: 2.2 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: 0.00034 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: 0.46 SJR: 0.333 SNIP: 0.606 CiteScore™:: 3.1 H-Index: 31

Indexed in

MULTIPHYSICS-MULTISCALE MODELING OF PLASMA-FACING STRUCTURES IN EXTREME HEAT AND RADIATION ENVIRONMENTS

卷 18, 册 2, 2020, pp. 285-304
DOI: 10.1615/IntJMultCompEng.2020030934
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摘要

In many engineering applications, such as fusion energy, hypersonic aircraft, and other space vehicles, structures are exposed to unprecedented levels of photon (heat) and energetic particle (plasma) energy flux on their surfaces. The shallow depth of interaction results in rapid heating and potential destruction of such structures if not designed carefully. We present a new design strategy that is twofold: multiphysics and multiscale. First, the structural component is modeled with the relevant physics utilizing appropriate coupling techniques, and in this case, we couple fluid flow with heat transfer in both fluids and solids, together with structural mechanics. The component is optimized for performance with such integrated multiphysics coupled models. Then, the optimized component is modeled only for its structural reliability using a top-down approach that begins from an elastic solution, followed by more detailed and coupled elastoplastic continuum model for the critical zone. The effects of the material microstructure can be revealed by correcting the material properties based on modeling at the microscale. A design example is shown here for a modular plasma-facing component in a fusion energy device (plasma divertor). The cooled unit has a micro-engineered tungsten foam protective tile on top of solid tungsten closed tubing with heat removal internals. Details of the tungsten foam are modeled to obtain effective thermomechanical properties that are then used in the multiscale modeling hierarchy.

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对本文的引用
  1. Ghazari Arian, Forte Ruggero, Yamamoto Takuya, Odette Robert, Ghoniem Nasr, Radiation effects on stress evolution and dimensional stability of large fusion energy structures, Fusion Engineering and Design, 172, 2021. Crossref

  2. Ghazari Arian, McElfresh Cameron, Dickstein Dylan, Marian Jaime, Ghoniem Nasr, Effects of cyclic plasma heating on surface damage of micro-porous tungsten, Physica Scripta, 96, 12, 2021. Crossref

  3. Ghazari Arian, McElfresh Cameron, Dickstein Dylan, Nadvornick Warren, Pintsuk Gerald, Wessel Egbert, Wirtz Marius, Hughes Don, Williams Brian, Marian Jaime, Ghoniem Nasr, Intense cyclic heating effects on thermo-fracture and thermal shock of solid tungsten and open-cell tungsten foam, Journal of Nuclear Materials, 565, 2022. Crossref

  4. Dickstein Dylan, Donghyun Ko Danny, Nadvornick Warren, Jain Karan, Holdheim Saurin, Sungtaek Ju Yongho, Ghoniem Nasr, Optimized Permeability of Microporous Foam for Transpiration Cooling in Hypersonic Leading Edge, Journal of Thermophysics and Heat Transfer, 2022. Crossref

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