Analysis of periodic synthetic turbulence generation and development for direct numerical simulations applications
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
The generation of periodic synthetic turbulence through superposition of Fourier modes is investigated. The introduction of directional biases and mismatches in the second-order statistics associated with the enforcement of periodicity is analyzed and quantified. Two strategies for mitigation of these disparities are proposed. The suggested approaches are subsequently validated and compared with the original methodologies using direct numerical simulations. The proposed strategies are capable of neutralizing the disparities in the second-order statistics at the injection region. The development from synthetic to realistic turbulence is evaluated through the resulting flow statistics and spectral analysis. It is found that higher-order statistics and other indicators converge to the expected results with sufficient length.& nbsp;(C) 2021 Author(s).
Details
Original language | English |
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Article number | 125130 |
Number of pages | 15 |
Journal | Physics of fluids |
Volume | 33 |
Issue number | 12 |
Publication status | Published - Dec 2021 |
Peer-reviewed | Yes |
External IDs
Scopus | 85122263134 |
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ORCID | /0000-0002-7406-7588/work/172570933 |
Keywords
Keywords
- LARGE-EDDY, DISSIPATION-RANGE, SKEWNESS, SPECTRUM, FLUID, FLOW, WAVE