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physics.flu-dyn2026
Emergence of Purely Elasto-Plastic Turbulence in Shear Flows
Muhammad Abdullah, Shravan Pradeep, Doug J. Jerolmack +2
We observe the emergence of a distinct, elasticity-driven flow state in a yield-stress fluid in the absence of inertia. Numerical simulations show that this elasto-plastic turbulen…
physics.flu-dyn2025
An Alternative Scaling for Roughness Transitions in Turbulent Flows: The Role of the Internal Boundary Layer
Justin P. Cooke, George I. Park, Douglas J. Jerolmack +1
When turbulent boundary layer flows encounter abrupt roughness changes, an Internal Boundary Layer (IBL) forms. Equilibrium theory breaks down in the nonequilibrium IBL, which may…
physics.flu-dyn2024
The Evolution of Turbulence Producing Motions in the ABL Across a Natural Roughness Transition
Justin P. Cooke, Douglas J. Jerolmack, George I. Park
Landforms such as sand dunes act as roughness elements to Atmospheric Boundary Layer (ABL) flows, triggering the development of new scales of turbulent motions. These turbulent mot…