A symmetry preserving dissipative artificial viscosity in r-z geometry

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F14%3A00218883" target="_blank" >RIV/68407700:21340/14:00218883 - isvavai.cz</a>
Result on the web
<a href="http://onlinelibrary.wiley.com/doi/10.1002/fld.3926/full" target="_blank" >http://onlinelibrary.wiley.com/doi/10.1002/fld.3926/full</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/fld.3926" target="_blank" >10.1002/fld.3926</a>

Result language
angličtina
Original language name
A symmetry preserving dissipative artificial viscosity in r-z geometry
Original language 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.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BA - General mathematics
OECD FORD branch
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Project
<a href="/en/project/GPP201%2F12%2FP554" target="_blank" >GPP201/12/P554: Advanced Lagrangian Methods for Computational Hydrodynamics</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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