99 citations · 295 across the 16 of their papers we have counts for
17 papers
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…
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…
Optimal Locomotion for Limbless Crawlers
Sreejith Santhosh, Mattia Serra
Limbless crawling is ubiquitous in biology, from cells to organisms. We develop and analyze a model for the dynamics of one-dimensional elastic crawlers, subject to active stress a…
Detecting Lagrangian coherent structures from sparse and noisy trajectory data
Saviz Mowlavi, Mattia Serra, Enrico Maiorino +1
Many complex flows such as those arising from ocean plastics in geophysics or moving cells in biology are characterized by sparse and noisy trajectory datasets. We introduce techni…
Defect-mediated dynamics of coherent structures in active nematics
Mattia Serra, Linnea Lemma, Luca Giomi +2
Active fluids, such as cytoskeletal filaments, bacterial colonies and epithelial cell layers, exhibit distinctive orientational coherence, often characterized by nematic order and…
Objective early identification of kinematic instabilities in shear flows
Bjoern F. Klose, Mattia Serra, Gustaaf B. Jacobs
A kinematic approach for the identification of flow instabilities is proposed. By defining a flow instability in the Lagrangian frame as the increased folding of lines of fluid par…