Zobrazeno 1 - 10
of 123
pro vyhledávání: '"Rosti, Marco Edoardo"'
We investigate the fluid-solid interaction of suspensions of Kolmogorov-size spherical particles moving in homogeneous isotropic turbulence at a microscale Reynolds number of $Re_\lambda \approx 140$. Two volume fractions are considered, $10^{-5}$ an
Externí odkaz:
http://arxiv.org/abs/2409.02467
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. Each capsule membrane satisfying strain-hardening characteristic is s
Externí odkaz:
http://arxiv.org/abs/2409.02379
The dimensional transition in turbulent jets of a shear-thinning fluid is studied via direct numerical simulations. Our findings reveal that under vertical confinement, the flow exhibits a unique mixed-dimensional (or 2.5D) state, where large-scale t
Externí odkaz:
http://arxiv.org/abs/2407.01038
Publikováno v:
J. Fluid Mech. 988 (2024) A17
We investigate by direct numerical simulations the fluid-solid interaction of non-dilute suspensions of spherical particles moving in triperiodic turbulence, at the relatively large Reynolds number of $Re_\lambda \approx 400$. The solid-to-fluid dens
Externí odkaz:
http://arxiv.org/abs/2404.16475
Autor:
Soligo, Giovanni, Rosti, Marco Edoardo
We perform numerical simulations of planar jets of elastoviscoplastic (EVP) fluid (\citet{saramito2007new} model) at low Reynolds number. Three different configurations are considered: $(i)$ EVP jet in EVP ambient fluid, $(ii)$ EVP jet in Newtonian a
Externí odkaz:
http://arxiv.org/abs/2404.03890
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 a detailed characterisation of the turbulent flow developed above and
Externí odkaz:
http://arxiv.org/abs/2312.13844
Publikováno v:
Physical Review Fluids 9, L012601 (2024)
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. Only two flapping states are possible: one where the fiber oscillates at
Externí odkaz:
http://arxiv.org/abs/2310.14574
We investigate the influence of dispersed solid spherical particles on the largest scales of the turbulent Arnold-Beltrami-Childress (ABC) flow. The ABC flow is an ideal instance of a complex flow: it does not have solid boundaries, but possesses an
Externí odkaz:
http://arxiv.org/abs/2310.08777
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 these two turbulent regimes in parallel flows with a gradual Re decrea
Externí odkaz:
http://arxiv.org/abs/2310.05340
Autor:
Takeishi, Naoki, Rosti, Marco Edoardo
We present numerical analysis of the lateral movement of a deformable spherical capsule in a pulsatile channel flow, with a Newtonian fluid in almost inertialess condition and at a small confinement ratio $a_0/R = 0.4$, where $R$ and $a$ are the chan
Externí odkaz:
http://arxiv.org/abs/2301.04302