Regularity diagnostics applied to a turbulent boundary layer
Abstract
Regularity diagnostics for the Navier-Stokes equations based on rescaled high-order vorticity moments are applied to direct numerical simulation (DNS) of plane turbulent channel flow and calculations of high-Reynolds-number vortex reconnection. At the wall-normal height typical of the tips of hairpin vortices, the temporal evolution of the vorticity moments is qualitatively similar to that of controlled high-Reynolds-number vortex reconnection in the absence of walls. Both the channel flow and vortex reconnection data exhibit higher measure of vorticity than previous results from decaying and forced isotropic turbulence. This allows for future analysis of vortex dynamics based on new results detailing the vorticity and helicity dynamics of reconnection events.
Additional Information
The authors acknowledge use of computational resources from the Certainty cluster awarded by the National Science Foundation to CTR, and the computing resources at the University of Warwick provided by its Centre for Scientific Computing, including use of the UK-EPSRC-funded Mid-Plus Consortium cluster.Attached Files
Published - 05_Bae.pdf
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Additional details
- Eprint ID
- 108520
- Resolver ID
- CaltechAUTHORS:20210322-152610635
- NSF
- Engineering and Physical Sciences Research Council (EPSRC)
- Created
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2021-03-24Created from EPrint's datestamp field
- Updated
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2021-03-24Created from EPrint's last_modified field