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physics.flu-dyn2023
Optimal Control of Short-Time Attractors in Active Fluid Flows
Carlo Sinigaglia, Francesco Braghin, Mattia Serra
Objective Eulerian Coherent Structures (OECSs) and instantaneous Lyapunov exponents (iLEs) govern short-term material transport in fluid flows as Lagrangian Coherent Structures and…
physics.flu-dyn2023
Spike formation theory in 3D flow separation
Sreejith Santhosh, Haodong Qin, Bjoern F. Klose +3
We develop a frame-invariant theory of material spike formation during flow separation over a no-slip boundary in three-dimensional flows with arbitrary time dependence. Based on t…