Distance-from-the-wall scaling of turbulent motions in wall-bounded flows
R Baidya, J Philip, N Hutchins, JP Monty, I Marusic
PHYSICS OF FLUIDS | AMER INST PHYSICS | Published : 2017
An assessment of self-similarity in the inertial sublayer is presented by considering the wall-normal velocity, in addition to the streamwise velocity component. The novelty of the current work lies in the inclusion of the second velocity component, made possible by carefully conducted subminiature ×-probe experiments to minimise the errors in measuring the wall-normal velocity. We show that not all turbulent stress quantities approach the self-similar asymptotic state at an equal rate as the Reynolds number is increased, with the Reynolds shear stress approaching faster than the streamwise normal stress. These trends are explained by the contributions from attached eddies. Furthermore, the ..View full abstract
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This paper is dedicated in the memory of John Lumley, whose work and legacy has had a profound impact on shaping the thoughts and research directions of the authors. The personal interactions with I. M. will always be treasured. The authors also wish to acknowledge the financial support of this research by the Australian Research Council.