A 3D finite element multigrid solver for the Euler equationsA low storage, computationally efficient algorithm for the solution of the compressible Euler equations on unstructured tetrahedral meshes is developed. The algorithm takes the form of a centered scheme with the explicit addition of a high accuracy artificial viscosity and the solution is advanced to steady state by means of a multistage timestepping method. The side-based data structure which is employed enables a clear connection to be established between the proposed algorithm and upwind cell vertex schemes for unstructured meshes. The computational efficiency of the procedure is improved by incorporating an unstructured multigrid acceleration procedure. A number of flows of practical interest are analyzed to demonstrate the numerical performance of the proposed approach.
Document ID
19920049041
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Peraire, J. (NASA Headquarters Washington, DC United States)
Peiro, J. (Imperial College of Science, Technology, and Medicine London, United Kingdom)
Morgan, K. (Swansea, University College, United Kingdom)