The application of standard multigrid methods for the solution of the Navier±Stokes equations in complicated domains causes problems in two ways. First, coarsening is not possible to full extent since the geometry must be resolved by the coarsest grid used. Second, for semi-implicit time-stepping sc
A way to split the Navier-Stokes equations in the context of the vortex method
✍ Scribed by Kornev, N. V. ;Basin, M. A.
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 132 KB
- Volume
- 14
- Category
- Article
- ISSN
- 1069-8299
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✦ Synopsis
A numerical scheme has been obtained rigorously from the initial-boundary value problem for the Navier± Stokes (NS) equations in the context of the vortex method. The technique is based on a transformation of the NS equation into a parabolic equation which has an exact solution. The numerical scheme is derived by expanding the exact solution in Taylor series in powers of a small time interval. Numerical implementation is developed with use of vortex particles to represent the vortex ¯ow domain. The method is used to solve practical engineering problems. The technique can also incorporate turbulence modelling.
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