4 papers
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…
Viscous Instabilities in Transversely Strained Channel Flows
Muhammad Abdullah
We investigate here linear stability in a canonical three-dimensional boundary layer generated by the superposition of a spanwise pressure gradient upon an otherwise standard chann…
Revisiting Crossflow-Based Stabilization in Channel Flows
Muhammad Abdullah, George Ilhwan Park
Stabilization schemes in wall-bounded flows often invoke fluid transpiration through porous boundaries. While these have been extensively validated for external flows, their effica…
Linear Stability Analysis of Oblique Couette-Poiseuille flows
Muhammad Abdullah, George Ilhwan Park
We perform a detailed numerical study of modal and non-modal stability in oblique Couette-Poiseuille profiles, which are among the simplest examples of three-dimensional boundary l…