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Description
  • We present a novel artificial viscosity for staggered Lagrangian schemes in 2D axi-symmetric r-z geometry on logically rectangular grids. The suggested viscous force is dissipative by construction, conserves both components of momentum, and preserves spherical symmetry on an equiangular polar grid. This method turns out to be robust and performs well for spherically symmetric problems on various grid types (symmetric, perturbed polar, rectangular), without any need for tinkering with problem-dependent or grid-dependent parameters. The results are compared with the outcome of the area-weighted approach using the popular tensor viscosity by Campbell and Shashkov.
  • We present a novel artificial viscosity for staggered Lagrangian schemes in 2D axi-symmetric r-z geometry on logically rectangular grids. The suggested viscous force is dissipative by construction, conserves both components of momentum, and preserves spherical symmetry on an equiangular polar grid. This method turns out to be robust and performs well for spherically symmetric problems on various grid types (symmetric, perturbed polar, rectangular), without any need for tinkering with problem-dependent or grid-dependent parameters. The results are compared with the outcome of the area-weighted approach using the popular tensor viscosity by Campbell and Shashkov. (en)
Title
  • A symmetry preserving dissipative artificial viscosity in r-z geometry
  • A symmetry preserving dissipative artificial viscosity in r-z geometry (en)
skos:prefLabel
  • A symmetry preserving dissipative artificial viscosity in r-z geometry
  • A symmetry preserving dissipative artificial viscosity in r-z geometry (en)
skos:notation
  • RIV/68407700:21340/14:00218883!RIV15-MSM-21340___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • I, P(GPP201/12/P554)
http://linked.open...iv/cisloPeriodika
  • 3
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
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  • 1224
http://linked.open...ai/riv/idVysledku
  • RIV/68407700:21340/14:00218883
http://linked.open...riv/jazykVysledku
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  • axi-symmetric; cylindrical geometry; artificial viscosity; dissipative; spherical symmetry; staggered Lagrangian (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • US - Spojené státy americké
http://linked.open...ontrolniKodProRIV
  • [B4DE3C532092]
http://linked.open...i/riv/nazevZdroje
  • International Journal for Numerical Methods in Fluids
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http://linked.open...ichTvurcuVysledku
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http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 76
http://linked.open...iv/tvurceVysledku
  • Váchal, Pavel
  • Wendroff, B.
http://linked.open...ain/vavai/riv/wos
  • 000340509200004
issn
  • 0271-2091
number of pages
http://bibframe.org/vocab/doi
  • 10.1002/fld.3926
http://localhost/t...ganizacniJednotka
  • 21340
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