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On a local multigrid mesh refinement method for solving Navier-Stokes equations. (Sur une méthode de raffinement local multigrille pour la résolution des équations de Navier-Stokes.) (French. Abridged English version) Zbl 0834.76065

We describe an original local mesh refinement technique based on a multigrid architecture on nested subdomains. We next present numerical results on natural convection inside a square cavity induced by a horizontal temperature gradient. The computations are performed for steady flows up to Rayleigh number \(10^7\), and they are compared to reference solutions.

MSC:

76M25 Other numerical methods (fluid mechanics) (MSC2010)
76R10 Free convection
65M55 Multigrid methods; domain decomposition for initial value and initial-boundary value problems involving PDEs
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