Bulletin of the American Physical Society
76th Annual Meeting of the Division of Fluid Dynamics
Sunday–Tuesday, November 19–21, 2023; Washington, DC
Session L16: CFD: LES, DNS, Hybrid RANS/LES I
8:00 AM–10:10 AM,
Monday, November 20, 2023
Room: 145A
Chair: Filipe Pereira, Los Alamos National Laboratory
Abstract: L16.00008 : Study on wavenumber adaptive simulation scaling behavior for channel flow and the simulation of a spatially developing mixing layer
9:31 AM–9:44 AM
Presenter:
Jose Padilla
(University of Notre Dame)
Authors:
Jose Padilla
(University of Notre Dame)
Andrew A Oliva
(University of Notre Dame)
Aleksandar Jemcov
(University of Notre Dame)
Scott C Morris
(University of Notre Dame)
Previous analysis on scaling function behavior was performed using DNS data of forced homogeneous isotropic turbulence with results showing fk estimated by the wavenumber adaptive model and that computed by filtering DNS data closely matched. This analysis was extended to DNS data of a channel flow. DNS data was filtered, and one-dimensional spectra were calculated and compared to modeled spectrum predictions.
Lastly, a spatially developing mixing layer (r = 0.6) was simulated using WAS. Computational results were compared to experiments for model validation. Additional simulations were performed using the k − ω SST unsteady Reynolds-Averaged Navier-Stokes (URANS) model. Results highlight the improved ability of WAS to resolve unsteadiness and mean profiles compared to URANS models.
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