Evidence that superstructures comprise self-similar coherent motions in high Reynolds number boundary layers

R Deshpande, CM de Silva, I Marusic - Journal of Fluid Mechanics, 2023 - cambridge.org
We present experimental evidence that the superstructures in turbulent boundary layers
comprise smaller, geometrically self-similar coherent motions. The evidence comes from …

Interfaces of uniform momentum zones in turbulent boundary layers

CM De Silva, J Philip, N Hutchins… - Journal of Fluid …, 2017 - cambridge.org
In this paper we examine the characteristics of the interfaces that demarcate regions of
relatively uniform streamwise momentum in turbulent boundary layers. The analysis utilises …

Experimental investigation of the effects of particle near-wall motions on turbulence statistics in particle-laden flows

H Liu, Y Feng, X Zheng - Journal of Fluid Mechanics, 2022 - cambridge.org
Experiments on particle-free and particle-laden flows with the same incoming velocity were
conducted in a horizontal wind tunnel. Three cases of particle-laden flows with different …

Streamwise inclination angle of large wall-attached structures in turbulent boundary layers

R Deshpande, JP Monty, I Marusic - Journal of Fluid Mechanics, 2019 - cambridge.org
Streamwise inclination angle of large wall-attached structures in turbulent boundary layers Page
1 J. Fluid Mech. (2019), vol. 877, R4, doi:10.1017/jfm.2019.663 journals.cambridge.org/rapids …

Two-dimensional energy spectra in high-Reynolds-number turbulent boundary layers

D Chandran, R Baidya, JP Monty… - Journal of Fluid …, 2017 - cambridge.org
Two-dimensional energy spectra in high-Reynolds-number turbulent boundary layers Page 1
J. Fluid Mech. (2017), vol. 826, R1, doi:10.1017/jfm.2017.359 journals.cambridge.org/rapids …

Validating under-resolved turbulence intensities for PIV experiments in canonical wall-bounded turbulence

JH Lee, Kevin, JP Monty, N Hutchins - Experiments in Fluids, 2016 - Springer
The discrepancy between measured turbulence intensity obtained from experiments in wall-
bounded turbulence and the fully resolved reference results (usually from DNS datasets) are …

Periodicity of large-scale coherence in turbulent boundary layers

CM de Silva, D Chandran, R Baidya, N Hutchins… - International Journal of …, 2020 - Elsevier
This study examines the pronounced periodicity of large-scale coherent structures in
turbulent boundary layers, which are of the order of the boundary layer thickness (δ) and …

Large coherence of spanwise velocity in turbulent boundary layers

CM de Silva, K Kevin, R Baidya, N Hutchins… - Journal of Fluid …, 2018 - cambridge.org
The spatial signature of spanwise velocity coherence in turbulent boundary layers has been
studied using a series of unique large-field-of-view multicamera particle image velocimetry …

Generalization of the PIV loss-of-correlation formula introduced by Keane and Adrian

S Scharnowski, K Grayson, CM de Silva, N Hutchins… - Experiments in …, 2017 - Springer
In 2D particle image velocimetry (PIV), the loss-of-correlation due to out-of-plane motion or
light-sheet mismatch has two effects. First, it reduces the probability of detecting a valid …

Spatiotemporal characteristics of uniform momentum zones: Experiments and modeling

A Laskari, CM De Silva, N Hutchins, BJ McKeon - Physical Review Fluids, 2022 - APS
The probability density function (PDF) of the instantaneous streamwise velocity has
consistently been used to extract information on the formation of uniform momentum zones …