Error estimates for finite element approximations of a viscous wave equation

Samir Karaa*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


We consider a family of fully discrete finite element schemes for solving a viscous wave equation, where the time integration is based on the Newmark method. A rigorous stability analysis based on the energy method is developed. Optimal error estimates in both time and space are obtained. For sufficiently smooth solutions, it is demonstrated that the maximal error in the L 2-norm over a finite time interval converges optimally as O(h p+1+Δts), where p denotes the polynomial degree, s=1 or 2, h the mesh size, and Δt the time step.

Original languageEnglish
Pages (from-to)750-767
Number of pages18
JournalNumerical Functional Analysis and Optimization
Issue number7
Publication statusPublished - Jul 2011


  • Energy method
  • Error estimates
  • Finite element method
  • Viscous wave equation

ASJC Scopus subject areas

  • Analysis
  • Signal Processing
  • Computer Science Applications
  • Control and Optimization


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