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Multilevel local refinement and multigrid methods for 3-D turbulent flow [electronic resource].

Published
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 1996.
Physical Description
pages 1, Paper 12 : digital, PDF file
Additional Creators
United States. Department of Energy. Office of Scientific and Technical Information
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Summary
A numerical approach based on multigrid, multilevel local refinement, and preconditioning methods for solving incompressible Reynolds-averaged Navier-Stokes equations is presented. 3-D turbulent flow around an underwater vehicle is computed. 3 multigrid levels and 2 local refinement grid levels are used. The global grid is 24 x 8 x 12. The first patch is 40 x 16 x 20 and the second patch is 72 x 32 x 36. 4th order artificial dissipation are used for numerical stability. The conservative artificial compressibility method are used for further improvement of convergence. To improve the accuracy of coarse/fine grid interface of local refinement, flux interpolation method for refined grid boundary is used. The numerical results are in good agreement with experimental data. The local refinement can improve the prediction accuracy significantly. The flux interpolation method for local refinement can keep conservation for a composite grid, therefore further modify the prediction accuracy.
Report Numbers
E 1.99:conf-9604167--vol.2
conf-9604167--vol.2
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Note
Published through SciTech Connect.
12/31/1996.
"conf-9604167--vol.2"
"DE96015307"
Copper Mountain conference on iterative methods, Copper Mountain, CO (United States), 9-13 Apr 1996.
Liu, C.; Huang, T.T.; Liao, C.; Sung, C.H.
Front Range Scientific Computations, Inc., Lakewood, CO (United States)
View MARC record | catkey: 14110940