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A stochastic method to account for the ambient turbulence in Lagrangian Vortex computations ArchiMer
Choma Bex, Camille; Carlier, Clement; Fur, Arnaud; Pinon, Gregory; Germain, Gregory; Rivoalen, Elie.
This paper describes a detailed implementation of the Synthetic Eddy Method (SEM) initially presented in Jarrin et al. (2006) applied to the Lagrangian Vortex simulation. While the treatment of turbulent diffusion is already extensively covered in scientific literature, this is one of the first attempts to represent ambient turbulence in a fully Lagrangian framework. This implementation is well suited to the integration of PSE (Particle Strength Exchange) or DVM (Diffusion Velocity Method), often used to account for molecular and turbulent diffusion in Lagrangian simulations. The adaptation and implementation of the SEM into a Lagrangian method using the PSE diffusion model is presented, and the turbulent velocity fields produced by this method are then...
Tipo: Text Palavras-chave: Ambient turbulence; Synthetic Eddy Method; Lagrangian method; Turbulence; Vortex method; Wake.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00652/76458/77550.pdf
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