Numerical simulation of viscosity/implicit largeeddy steady turbulence with the Reynolds number dependency

Naoyuki Iwata, Hiroki Suzuki, Shinsuke Mochizuki

Research output: Contribution to journalConference articlepeer-review

Abstract

This study presents a numerical analysis that models small scale turbulence using numerical viscosity or implicit large-eddy simulation (LES). The motivation for focusing on these models is that the sub-grid scale components of LES are assumed to have a sufficiently high Reynolds number turbulence. The Reynolds number dependence of steady isotropic turbulence is used to validate the present analysis. Here, this dependency ranges from low to high Reynolds numbers. The results of this analysis are validated by comparing them with those of direct numerical simulation. The donor cell method and quick method are used as schemes of the numerical viscosity. Analysis based on the numerical viscosity can give accurate turbulent kinetic energy values at high Reynolds numbers and implicit LES at low Reynolds numbers. However, these models did not accurately predict static pressure fluctuations. These results were discussed by visualizing the large-scale turbulent structures.

Original languageEnglish
Article number012007
JournalJournal of Physics: Conference Series
Volume2047
Issue number1
DOIs
Publication statusPublished - Oct 25 2021
Event4th International Conference on Material Strength and Applied Mechanics, MSAM 2021 - Macau, Virtual, China
Duration: Aug 16 2021Aug 19 2021

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint

Dive into the research topics of 'Numerical simulation of viscosity/implicit largeeddy steady turbulence with the Reynolds number dependency'. Together they form a unique fingerprint.

Cite this