TY - JOUR
T1 - Effects of spatial resolution anisotropy on viscous terms using isotropic steady turbulence numerical analysis
AU - Hirabayashi, Riku
AU - Suzuki, Hiroki
AU - Mochizuki, Shinsuke
N1 - Funding Information:
This work was supported in part by the Japanese Ministry of Education, Culture, Sports, Science and Technology through Grants-in-Aid (Nos. 20H02069 and 21K03859). This work was supported (in part) by Grant for Environmental Research Projects from The Sumitomo Foundation.
Publisher Copyright:
© 2021 Institute of Physics Publishing. All rights reserved.
PY - 2021/10/25
Y1 - 2021/10/25
N2 - 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.
AB - 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.
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U2 - 10.1088/1742-6596/2047/1/012008
DO - 10.1088/1742-6596/2047/1/012008
M3 - Conference article
AN - SCOPUS:85119294783
SN - 1742-6588
VL - 2047
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012008
T2 - 4th International Conference on Material Strength and Applied Mechanics, MSAM 2021
Y2 - 16 August 2021 through 19 August 2021
ER -