Adaptive Finite-Volume Solution of the Two-Dimensional Euler Equations on Unstructured Meshes PUBLIC ACCESS

[+] Author Affiliations
Stefan Irmisch

Universität Stuttgart, Stuttgart, Germany

Paper No. 94-GT-087, pp. V001T01A033; 12 pages
  • ASME 1994 International Gas Turbine and Aeroengine Congress and Exposition
  • Volume 1: Turbomachinery
  • The Hague, Netherlands, June 13–16, 1994
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7883-5
  • Copyright © 1994 by ASME


This paper presents a finite-volume method for solving the compressible, two-dimensional Euler equations using unstructured triangular meshes. The integration in time, to a steady-state solution, is performed using an explicit, multistage Runge-Kutta algorithm. A special treatment of the artificial viscosity along the boundaries reduces the production of numerical losses. Convergence acceleration is achieved by employing local time-stepping, implicit residual smoothing and a multigrid technique.

The use of unstructured meshes, based on Delaunay triangulation, automatically adapted to the solution, allows arbitrary geometries and complex flow features to be treated easily. The employed refinement criterion does not only detect strong shocks, but also weak flow features.

Solutions are presented for several subsonic and transonic standard test cases and cascade flows that illustrate the capability of the algorithm.

Copyright © 1994 by ASME
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