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Effects of spatial resolution anisotropy on viscous terms using isotropic steady turbulence numerical analysis

Hirabayashi, Riku ; Suzuki, Hiroki ; Mochizuki, Shinsuke

Journal of physics. Conference series, 2021-10, Vol.2047 (1), p.12008 [Periódico revisado por pares]

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Título:
Effects of spatial resolution anisotropy on viscous terms using isotropic steady turbulence numerical analysis
Autor: Hirabayashi, Riku ; Suzuki, Hiroki ; Mochizuki, Shinsuke
É parte de: Journal of physics. Conference series, 2021-10, Vol.2047 (1), p.12008
Descrição: Abstract This study presents the effects of spatial resolution anisotropy on an isotropic turbulence field. Here, this turbulence field is steady. In order to set the anisotropy of the spatial resolution, the accuracy order of the viscosity terms is set to be anisotropic. The convection and viscosity terms are discretized using the second-order or fourth-order central difference schemes. The Reynolds number dependence of the turbulence statistics is used to examine this influence. The effects of resolution anisotropy on the small-scale turbulent field obtained by longitudinal derivatives as well as large-scale turbulent fields are small. On the other hand, the small-scale turbulent field obtained by lateral derivatives is significantly affected by the anisotropy of resolution in the low Reynolds number condition.
Editor: IOP Publishing
Idioma: Inglês

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