23 citations · 38 across the 4 of their papers we have counts for
Showing 2021 · physics.flu-dynShow all
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physics.flu-dyn2021
On the enhancement of boundary layer skin friction by turbulence: an angular momentum approach
Ahmed Elnahhas, Perry L. Johnson
Turbulence enhances the wall shear stress in boundary layers, significantly increasing the drag on streamlined bodies. Other flow features such as freestream pressure gradients and…
physics.flu-dyn2021
A physics-inspired alternative to spatial filtering for large-eddy simulations of turbulent flows
Perry L. Johnson
Large-eddy simulations (LES) are widely-used for computing high Reynolds number turbulent flows. Spatial filtering theory for LES is not without its shortcomings, including how to…
physics.flu-dyn2021
On the role of vorticity stretching and strain self-amplification in the turbulence energy cascade
Perry L. Johnson
The tendency of turbulent flows to produce fine-scale motions from large-scale energy injection is often viewed as a scale-wise cascade of kinetic energy driven by vorticity stretc…