Possible corrections for measured spatial velocity derivatives have been inferred from a direct numerical simulation database for a fully developed turbulent channel flow. The magnitude of the correction depends much less on the distance from the wall for derivatives in the spanwise direction than for those in the wall-normal direction. Corrections based on local isotropy are better approximations for spanwise derivatives than for wall-normal derivatives.
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The support of the Australian Research Council is gratefully ackowledged.
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Antonia, R.A., Zhu, Y. & Kim, J. Corrections for spatial velocity derivatives in a turbulent shear flow. Experiments in Fluids 16, 411–413 (1994). https://doi.org/10.1007/BF00202066
- Shear Flow
- Channel Flow
- Direct Numerical Simulation
- Local Isotropy