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Combined swept region and intersection-based single-material remapping method

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F17%3A00310245" target="_blank" >RIV/68407700:21340/17:00310245 - isvavai.cz</a>

  • Result on the web

    <a href="http://onlinelibrary.wiley.com/doi/10.1002/fld.4384/full" target="_blank" >http://onlinelibrary.wiley.com/doi/10.1002/fld.4384/full</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1002/fld.4384" target="_blank" >10.1002/fld.4384</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Combined swept region and intersection-based single-material remapping method

  • Original language description

    A typical Arbitrary Lagrangian-Eulerian (ALE) algorithm consists of a Lagrangian step, where the computational mesh moves with the fluid flow, a rezoning step, where the computational mesh is smoothed and repaired in case it gets too distorted, and a remapping step, where all fluid quantities are conservatively interpolated on this new mesh. In single-material simulations, the remapping process can be represented in a flux form, with fluxes approximated by integrating a reconstructed function over intersections of neighboring computational cells on the original and rezoned computational mesh. This algorithm is complex and computationally demanding -- therefore a simpler approach, which utilizes regions swept by the cell edges during rezoning, is often used in practice. However, it has been observed that such simplification can lead to distortion of the solution symmetry, especially when the mesh movement is not bound by such symmetry. For this reason, we propose an algorithm combining both approaches in a similar way that was proposed for multi-material remapping (two-step hybrid remap). Intersections and exact integration are employed only in certain parts of the computational mesh, marked by a switching function -- various different criteria are presented in this paper. The swept-based method is used elsewhere in areas that are not marked. This way our algorithm can retain the beneficial symmetry-preserving capabilities of intersection-based remapping while keeping the overall computational cost moderate.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10101 - Pure mathematics

Result continuities

  • Project

    <a href="/en/project/GA14-21318S" target="_blank" >GA14-21318S: Lagrangian and ALE methods for mechanics of compressible fluids and elastic-plastic solids</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2017

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    International Journal for Numerical Methods in Fluids

  • ISSN

    0271-2091

  • e-ISSN

    1097-0363

  • Volume of the periodical

    85

  • Issue of the periodical within the volume

    6

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    20

  • Pages from-to

    363-382

  • UT code for WoS article

    000410707900002

  • EID of the result in the Scopus database

    2-s2.0-85019044851