Ian Jacobi
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View article: Interpretation of the amplitude modulation coefficient and a new transport-based coefficient
Interpretation of the amplitude modulation coefficient and a new transport-based coefficient Open
The amplitude modulation coefficient, $R$ , that is widely used to characterize nonlinear interactions between large- and small-scale motions in wall-bounded turbulence is not compatible with detecting the convective nonlinearity of the Na…
View article: The interpretation of the amplitude modulation coefficient and a transport-based alternative
The interpretation of the amplitude modulation coefficient and a transport-based alternative Open
The amplitude modulation coefficient, $R$, that is widely used to characterize non-linear interactions between large- and small-scale motions in wall-bounded turbulence is not actually compatible with detecting the convective non-linearity…
View article: Variability of convection velocities and structure inclination angles in wall-bounded turbulence
Variability of convection velocities and structure inclination angles in wall-bounded turbulence Open
The scale-dependent variability of convective velocities and structure inclination angles in wall-bounded turbulence was studied experimentally via space–time energy spectrum measurements. We found that the variability of convection veloci…
View article: Prediction of the phase difference between large-scale velocity and Reynolds stress fluctuations in wall turbulence
Prediction of the phase difference between large-scale velocity and Reynolds stress fluctuations in wall turbulence Open
A resolvent-based model was used to predict the phase-difference profile between velocity and stress coherent motions measured in a high Reynolds number channel flow as a proxy for predicting large- and small-scale turbulent interactions. …
View article: Spatial detection and hierarchy analysis of large-scale particle clusters in wall-bounded turbulence
Spatial detection and hierarchy analysis of large-scale particle clusters in wall-bounded turbulence Open
Large-scale inertial particle clustering in a turbulent boundary layer (TBL) was investigated experimentally by two-colour particle-image velocimetry and particle-tracking velocimetry measurements in the wall-parallel plane of the log laye…
View article: Localized drag modification in a laminar boundary layer subject to free-stream travelling waves via critical and Stokes layer interactions
Localized drag modification in a laminar boundary layer subject to free-stream travelling waves via critical and Stokes layer interactions Open
Perturbation of the laminar boundary layer by free-stream travelling waves was shown to produce highly-localized skin friction modification via steady streaming. The forced boundary layer flow was calculated numerically and studied as a fu…
View article: Investigation of Inverse Magnus Effect by Partial Circulation ControlElements: Experimental Design
Investigation of Inverse Magnus Effect by Partial Circulation ControlElements: Experimental Design Open
The inverse Magnus effect is a special physical state that can only be achieved within certain ranges of the Reynolds number and the spin ratio.Numerical studies and particularly, special experimental setups are required for its investigat…
View article: Interactions between scales in wall turbulence: phase relationships, amplitude modulation and the importance of critical layers
Interactions between scales in wall turbulence: phase relationships, amplitude modulation and the importance of critical layers Open
View article: Controlled Uniform Coating from the Interplay of Marangoni Flows and Surface-Adsorbed Macromolecules
Controlled Uniform Coating from the Interplay of Marangoni Flows and Surface-Adsorbed Macromolecules Open
Surface coatings and patterning technologies are essential for various physicochemical applications. In this Letter, we describe key parameters to achieve uniform particle coatings from binary solutions. First, multiple sequential Marangon…
View article: Stratified thin-film flow in a rheometer
Stratified thin-film flow in a rheometer Open
When two immiscible layered fluids are present in a rheometer, interfacial distortions driven by the centripetal pressure gradient can modify torque measurements and induce dewetting. In particular, we examine the steady-state interface sh…