DNS 1-5 Quantification of Resolution: Difference between revisions
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correlations between the velocity components. If possible provide computed temporal spectra at | correlations between the velocity components. If possible provide computed temporal spectra at | ||
selected locations and relate to spatial resolution e.g. by using Taylor's hypothesis. | selected locations and relate to spatial resolution e.g. by using Taylor's hypothesis. | ||
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|align="center"|'''Figure 1:''' Rounded step case, Re=78490. Relation between the mesh size and the Taylor microscale at midspan using MIGALE with DG P3 (~300 million DoF/eqn). | |||
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==Solution verification== | ==Solution verification== | ||
One way to verify that the DNS are properly resolved is to examine the residuals of the Reynolds- | One way to verify that the DNS are properly resolved is to examine the residuals of the Reynolds- | ||
Revision as of 15:17, 21 November 2022
Quantification of resolution
Mesh resolution
Provide wall resolution in wall coordinates, both normally ("y+") and tangentially ("x+", "z+"). Evaluate typical turbulence length scales (Taylor microscale, Kolmogorov) and compare to local resolution. In case the case presents homogeneous directions, one could also provide spatial correlations between the velocity components. If possible provide computed temporal spectra at selected locations and relate to spatial resolution e.g. by using Taylor's hypothesis.
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| Figure 1: Rounded step case, Re=78490. Relation between the mesh size and the Taylor microscale at midspan using MIGALE with DG P3 (~300 million DoF/eqn). |
Solution verification
One way to verify that the DNS are properly resolved is to examine the residuals of the Reynolds-
stress budget equations. These residuals are among the statistical volume data to be provided as
described in Statistical Data section.
Contributed by: Francesco Bassi, Alessandro Colombo, Francesco Carlo Massa — Università degli studi di Bergamo (UniBG)
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