Adapting a Fourier pseudospectral method to Dirichlet boundary conditions for Rayleigh–Bénard convection
We present the adaptation to non–free boundary conditions of a pseudospectral method based on the (complex) Fourier transform. The method is applied to the numerical integration of the Oberbeck–Boussinesq equations in a Rayleigh–Bénard cell with no-slip boundary conditions for velocity and Dirichlet...
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Autores principales: | , |
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Formato: | article |
Lenguaje: | Inglés |
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2022
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Materias: | |
Acceso en línea: | http://hdl.handle.net/11086/22156 http://dx.doi.org/10.4279/PIP.070015 |
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Sumario: | We present the adaptation to non–free boundary conditions of a pseudospectral method based on the (complex) Fourier transform. The method is applied to the numerical integration of the Oberbeck–Boussinesq equations in a Rayleigh–Bénard cell with no-slip boundary conditions for velocity and Dirichlet boundary conditions for temperature. We show the first results of a 2D numerical simulation of dry air convection at high Rayleigh number (R ∼ 10^9). These results are the basis for the later study, by the same method, of wet convection in a solar still. |
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