Bulletin of the American Physical Society
74th Annual Meeting of the APS Division of Fluid Dynamics
Volume 66, Number 17
Sunday–Tuesday, November 21–23, 2021; Phoenix Convention Center, Phoenix, Arizona
Session H28: Computational Fluid Dynamics: LES, DNS, Hybrid RANS/LES I
8:00 AM–10:10 AM,
Monday, November 22, 2021
Room: North 228 AB
Chair: George Park, University of Pennsylvania
Abstract: H28.00006 : LES Scale Enrichment in spatially-decaying isotropic turbulence*
9:05 AM–9:18 AM
Aditya S Ghate
Sanjiva K Lele
We have applied the method to spatially decaying isotropic turbulence. Our investigation is two-fold. First, we are interested in exploring the limit of infinite turbulence intensity at the inlet. This is difficult to achieve in the laboratory and, to our knowledge, no numerical investigation has been conducted. Initial results indicate that scaling exponents for the integral length scale and turbulence intensity are strong functions of inlet intensity due to the increased role of turbulent transport to balance energy dissipation. Second, we will evaluate the ability of the enrichment method to handle the high-turbulence intensity regime and represent the subgrid field consistently; we have seen good results for moderate intensities.
*This work is supported by NSF grant NSF-CBET-1803378.
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