Comparison of large-scale amplitude modulation in turbulent boundary layers, pipes, and channel flows
Romain Mathis, Jason P Monty, Nicholas Hutchins, Ivan Marusic
PHYSICS OF FLUIDS | AMER INST PHYSICS | Published : 2009
Recent investigations by Monty et al. [J. Fluid Mech. 632, 431 (2009)] showed that important modal differences exist between channels/pipes and boundary layers, mainly in the largest energetic scales. In addition, Mathis et al. [J. Fluid Mech. 628, 311 (2009)] recently reported and quantified a nonlinear scale interaction in zero-pressure gradient turbulent boundary layers, whereby the large-scale motion amplitude modulates the small-scale motions. In this study, a comparison of this modulation effect of the streamwise velocity component is undertaken for all three flows for matched Reynolds number and measurement conditions. Despite the different large-scale phenomena in these internal and ..View full abstract
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Awarded by Australian Research Council
We gratefully acknowledge the financial support of the Australian Research Council through Grant Nos. DP0663499, FF0668703, and DP0984577.