Multigrid unsteady navier-stokes calculations with aeroelastic applications

Juan J. Alonso, Luigi Martinelli, Antony Jameson

Research output: Contribution to conferencePaperpeer-review

82 Scopus citations


An implicit approach to the solution of the unsteady two-dimensional Navier-Stokes equations is presented. After spatial discretization, the resulting set of coupled implicit non-linear equations is solved iteratively. This is accomplished using well proven convergence acceleration techniquies for explicit schemes such as multigrid, residual averaging, and local time-stepping in order to achieve large computational efficiency in the calculation. Calculations are performed in parallel using a domain decomposition technique with optimized communication requirements. In addition, particular care is taken to minimize the effect of numerical dissipation with flux-limited dissipation schemes. Results for the unsteady shedding flow behind a circular cylinder and for a pitching NACA 64A010 airfoil are presented with experimental comparisons, showing the feasibility of accurate, efficient, time-dependent viscons calculations. Finally, a two-dimensional structural model of the cylinder is coupled with the unsteady flow solution, and time responses of the deflections of the structure are analyzed.

Original languageEnglish (US)
StatePublished - 1995
Event33rd Aerospace Sciences Meeting and Exhibit, 1995 - Reno, United States
Duration: Jan 9 1995Jan 12 1995


Other33rd Aerospace Sciences Meeting and Exhibit, 1995
Country/TerritoryUnited States

All Science Journal Classification (ASJC) codes

  • Space and Planetary Science
  • Aerospace Engineering


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