546 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- The University of TokyoJP98 papers
- Centre National de la Recherche ScientifiqueFR85 papers
- The University of OsakaJP47 papers
- RIKENJP46 papers
- University College CorkIE46 papers
- Kyoto UniversityJP34 papers
- Nagoya UniversityJP34 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR29 papers
- Hiroshima UniversityJP28 papers
- Institute of Space and Astronautical ScienceJP28 papers
- Japan Aerospace Exploration AgencyJP27 papers
- Tohoku UniversityJP27 papers
77 papers · 1 filter
Energetics and Stochastics of Extreme Waves Breaking over a Symmetrical Breakwater
Saulo Mendes, Yuchen He, Jérôme Kasparian +1
Rogue wave formation and enhancement over coastal areas have been documented over the last decade. This seems to contradict the observed low rogue wave (RW) probability near the su…
Coherent structures in Newtonian and viscoelastic turbulent planar jets
Christian Amor, Adrián Corrochano, Giovanni Soligo +2
The addition of a small amount of long-chain polymers confers viscoelastic properties to Newtonian flows. The resulting non-Newtonian solution now exhibits different dynamics, such…
Beyond Stokes drift -- Lagrangian transport in evolving gravity waves
Tatsuo Izawa, Giulio Foggi Rota, Alessandro Chiarini +1
Finite-amplitude gravity waves at the air-water interface induce net fluid and particle transport, known as Stokes drift. While this mechanism is well understood for steady waves,…
Effect of submerged vegetation on water surface geometry and air-water momentum transfer
Giulio Foggi Rota, Alessandro Chiarini, Marco Edoardo Rosti
Understanding how submerged vegetation modifies the water surface is crucial for modeling momentum exchange between shallow waters and the atmosphere. In particular, quantifying it…
Filament inclination effect on turbulent canopy flows
Shane Nicholas, Mohammad Omidyeganeh, Alfredo Pinelli +3
Inspired by the spontaneous behaviour observed in filamentous layers -- where the balance between flow-induced drag and structural elasticity dictates the filaments' equilibrium st…
The broken link between space and time in elastic turbulence
Giulio Foggi Rota, Rahul K. Singh, Alessandro Chiarini +4
Elastic turbulence (ET), observed in flows of sufficiently elastic polymer solution at small inertia, is characterized by chaotic motions and power-law scaling of energy spectrum (…
Extending flow birefringence analysis to combined extensional-shear flows via Jeffery-Hamel flow measurements
Miu Kobayashi, William Kai Alexander Worby, Misa Kawaguchi +3
This study investigates the relationship between phase retardation and strain rates in combined extensional-shear flows using the Jeffery-Hamel flow formalism, which yields an anal…
Edge-effects in the turbulent flow over flexible aquatic vegetation
Giulio Foggi Rota, Elisa Tressoldi, Francesco Avallone +1
Riparian vegetation along riverbanks and seagrass along coastlines interact with water currents, significantly altering their flow. To characterise the turbulent fluid motion along…
Transport of spherical microparticles in a 3D vortex flow
Marine Aulnette, Noa Burshtein, Arash Alizad Banaei +5
Particles are common in biological and environmental flows and are widely used in industrial and pharmaceutical applications. Their motion and flow dynamics are strongly affected b…
The effect of shear-thinning on the scalings and small-scale structures of turbulence
Marco Edoardo Rosti
We study the homogeneous isotropic turbulence of a shear-thinning fluid modeled by the Carreau model and show how the variable viscosity affects the multiscale behaviour of the tur…
Flow birefringence measurement in a radial Hele-Shaw cell considering three-dimensional effects
Misa Kawaguchi, William Kai Alexander Worby, Yuto Yokoyama +3
Flow birefringence measurement is an emerging technique for visualizing stress fields in fluid flows. This study investigates flow birefringence in the steady radial Hele-Shaw flow…
Energy, enstrophy and helicity transfers in polymeric turbulence
Alessandro Chiarini, Rahul K. Singh, Marco E. Rosti
We characterise the scale-by-scale transfers of energy, enstrophy and helicity in homogeneous and isotropic polymeric turbulence using direct numerical simulations. The microscale…
Shoaling of Finite-Amplitude Rogue Waves
Saulo Mendes, Yuchen He, Jérôme Kasparian +1
Rogue wave formation and enhancement over coastal areas have been documented over the last decade. However, this recent knowledge is in apparent contradiction with the established…
Reconfiguration and dynamics of clamped fibers under finite-amplitude surface gravity waves
Giulio Foggi Rota, Alessandro Chiarini, Marco Edoardo Rosti
We investigate the behaviour of a flexible stem completely submerged under a surface gravity wave of finite amplitude using fully resolved direct numerical simulations. By varying…
Turbulent skin-friction drag reduction via spanwise forcing at high Reynolds number
Davide Gatti, Maurizio Quadrio, Alessandro Chiarini +2
We address the Reynolds-number dependence of the turbulent skin-friction drag reduction induced by streamwise-travelling waves of spanwise wall oscillations. The study relies on di…
Inertial focusing of spherical capsule in pulsatile channel flows
Naoki Takeishi, Kenta Ishimoto, Naoto Yokoyama +1
We present numerical analysis of the lateral movement of spherical capsule in the steady and pulsatile channel flow of a Newtonian fluid, for a wide range of oscillatory frequency.…
From yield stress to elastic instabilities: Tuning the extensional behavior of elastoviscoplastic fluid
Mohamed S. Abdelgawad, Simon J. Haward, Amy Q. Shen +1
In this study, we delve into the intricacies of elastoviscoplastic (EVP) fluids, particularly focusing on how polymer additives influence their extensional behavior. Our findings r…
Stability and dynamics of the laminar flow past rectangular prisms
Alessandro Chiarini, Edouard Boujo
The laminar flow past rectangular prisms is studied in the space of length-to-height ratio (), width-to-height ratio () and Reynolds number ($Re…
Finite-size inertial spherical particles in turbulence
Alessandro Chiarini, Marco Edoardo Rosti
We investigate by direct numerical simulations the fluid-solid interaction of non-dilute suspensions of spherical particles moving in triperiodic turbulence, at the relatively larg…
Dynamics and fluid-structure interaction in turbulent flows within and above flexible canopies
Giulio Foggi Rota, Alessandro Monti, Stefano Olivieri +1
Flexible canopy flows are often encountered in natural scenarios, e.g., when crops sway in the wind or when submerged kelp forests are agitated by marine currents. Here, we provide…
Forced and natural dynamics of a clamped flexible fiber in wall turbulence
Giulio Foggi Rota, Morie Koseki, Riya Agrawal +2
We characterize the dynamical behavior of a clamped flexible fiber immersed in wall turbulence over a wide range of natural frequencies by means of direct numerical simulations. On…
A unified view of elastic and elasto-inertial turbulence in channel flows at low and moderate Reynolds numbers
Giulio Foggi Rota, Christian Amor, Soledad Le Clainche +1
The chaotic flow of elastic fluids at low Reynolds number (Re) is typically distinguished into elasto-inertial and elastic turbulence (EIT/ET). However, the clear separation among…
Morphology of clean and surfactant-laden droplets in homogeneous isotropic turbulence
Ianto Cannon, Giovanni Soligo, Marco E. Rosti
We perform direct numerical simulations of surfactant-laden droplets in homogeneous isotropic turbulence with Taylor Reynolds number of 180. The droplets are modelled using the vol…
On-off pumping for drag reduction in a turbulent channel flow
Giulio Foggi Rota, Alessandro Monti, Marco E. Rosti +1
We show that the energy required by a turbulent flow to displace a given amount of fluid through a straight duct in a given time interval can be reduced by modulating in time the p…