Adaptive grid refinement using cell-level and global imbalances

S. Chang, D. C. Haworth

Research output: Contribution to journalArticle

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Abstract

A methodology for local solution-adaptive mesh refinement in computational fluid dynamics (CFD) using cell-level and global kinetic energy balances is formulated and tested. Results are presented for two two-dimensional steady incompressible laminar benchmark problems: a lid-driven cavity (Reynolds number Re = 1000) and a backward-facing step (Re = 400). It is demonstrated that local kinetic energy imbalance correlates with local solution accuracy, that normalized global imbalance is an appropriate criterion for halting mesh refinement and that a specified level of accuracy is realized at lower computational effort using local refinement compared with a uniform finer mesh.

Original languageEnglish (US)
Pages (from-to)375-392
Number of pages18
JournalInternational Journal for Numerical Methods in Fluids
Volume24
Issue number4
DOIs
StatePublished - Feb 28 1997

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All Science Journal Classification (ASJC) codes

  • Computational Mechanics
  • Mechanics of Materials
  • Mechanical Engineering
  • Computer Science Applications
  • Applied Mathematics

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