Comparison of discontinuous Galerkin time integration schemes for the solution of flow problems with deformable domains

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F15%3A43925994" target="_blank" >RIV/49777513:23520/15:43925994 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.amc.2015.03.063" target="_blank" >http://dx.doi.org/10.1016/j.amc.2015.03.063</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.amc.2015.03.063" target="_blank" >10.1016/j.amc.2015.03.063</a>

Result language
angličtina
Original language name
Comparison of discontinuous Galerkin time integration schemes for the solution of flow problems with deformable domains
Original language description
The computational eciency of numerical solvers is known to strongly depend on the chosen time integration scheme. Thus, when solving viscous flow problems on time-varying domains, an eficient and reliable solver is one of the prerequisites for a successful solution. For this reason, we provide a comparison of two time integration schemes in terms of numerical error and CPU time usage. The contribution of the paper lies in the mutual comparison of two diferent approaches for time integration of the compressible Navier-Stokes equations in arbitrary Lagrangian-Eulerian (ALE) description that are spatially discretised by the discontinuous Galerkin fnite element method. The computational ability of implicit Crank-Nicolson scheme and explicit three-step Runge-Kutta scheme, computational performance of which is improved by the local time-stepping technique, are tested on two flow problems: the propagation of an isentropic vortex, which has a known analytical solution, and the viscous flow aro
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
BK - Liquid mechanics
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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