A5075643472- Lattice Boltzmann Simulation Studies
- Fluid Dynamics and Turbulent Flows
- Aerosol Filtration and Electrostatic Precipitation
- Fluid Dynamics and Vibration Analysis
- Nanopore and Nanochannel Transport Studies
- Innovative Microfluidic and Catalytic Techniques Innovation
- Advanced Thermodynamics and Statistical Mechanics
- Quantum, superfluid, helium dynamics
- Gas Dynamics and Kinetic Theory
- Generative Adversarial Networks and Image Synthesis
- Heat and Mass Transfer in Porous Media
- Pickering emulsions and particle stabilization
- Material Dynamics and Properties
- Fluid Dynamics and Heat Transfer
- Cold Atom Physics and Bose-Einstein Condensates
- Theoretical and Computational Physics
- Microfluidic and Bio-sensing Technologies
- Cosmology and Gravitation Theories
- Fluid Dynamics and Thin Films
- Particle Dynamics in Fluid Flows
- Electrohydrodynamics and Fluid Dynamics
- Quantum Mechanics and Applications
- Model Reduction and Neural Networks
- Micro and Nano Robotics
- Blood properties and coagulation
Italian Institute of Technology
2018-2025
Harvard University
2016-2025
Tufts University
2006-2025
University College London
2019-2025
Istituto per le Applicazioni del Calcolo Mauro Picone
2015-2024
Consorzio Roma Ricerche
2019-2024
Harvard University Press
2013-2024
National Research Council
2006-2023
University of Lisbon
2023
University of Freiburg
2010-2022
We report on the existence of a hitherto undetected form self-similarity, which we call extended self-similarity (ESS). ESS holds at high as well low Reynolds number, and it is characterized by same scaling exponents velocity differences fully developed turbulence.
An efficient strategy is developed for building suitable collision operators, to be used in a simplified version of the lattice gas Boltzmann equation. The resulting numerical scheme shown linearly stable. method applied computation flow channel containing periodic array obstacles.
Complex fluid physics can be modeled using an extended kinetic (Boltzmann) equation in a more efficient way than the continuum Navier-Stokes equations. Here, we explain this method for modeling turbulence and show its effectiveness with use of computationally implementation terms discrete or "lattice" Boltzmann equation.
Ideal MHD restricts both the current and pressure which can be stably confined in a Tokamak. A profile optimisation is carried out for variety of equilibria, include JET INTOR-like plasmas, order to obtain maximum β at constant current. The limited value corresponding safety factor slightly above 2 plasma surface. simple scaling law found that fits well all cases predicts linear rise 3 with
The physical behaviour of a class mesoscopic models for multiphase flows is analyzed in details near interfaces. In particular, an extended pseudo-potential method developed, which permits to tune the equation state and surface tension independently each other. spurious velocity contributions this model are shown vanish limit high grid refinement and/or order isotropy. Higher schemes implement self-consistent forcings rigorously computed 2d 3d models. scenario developed work clarifies...
It is shown that the lattice Boltzmann equation (LBE) for a gas provides viable numerical method study of three-dimensional flows in complex geometries. Numerical results low Reynolds number random medium are reported. The Darcy's law recovered and preliminary estimation permeability presented.
Based on the past twenty-five years of lattice Boltzmann research, we venture into a far-flung prediction for next twenty-five, with and future privileged over present state affairs.
We present a full quantum algorithm for the lattice Boltzmann method simulating fluid flows, only such to implement both streaming and collision substeps as unitary operators using an efficient number of qubits. use Hamiltonian simulation main route underlying algorithm, show that it uses qubits scale logarithmically in flow Reynolds but gates polynomially. motivate discussion by brief overview existing attempts at classical fluids on computers pedagogical assigning variables substeps, after...
Droplet microfluidics has emerged as highly relevant technology in diverse fields such nanomaterials synthesis, photonics, drug delivery, regenerative medicine, food science, cosmetics, and agriculture. While significant progress been made understanding the fundamental mechanisms underlying droplet generation microchannels fabricating devices to produce droplets with varied functionality high throughput, challenges persist along two important directions. On one side, generalization of...
We show that an explicit time-marching method previously developed for the numerical study of dynamics Bose-Einstein condensates can be profitably adapted to determination their ground state. After reduction a one-dimensional model, we first reproduce and test known results on in harmonic traps then determine state condensate harmonically bound optical lattice range parameters which are relevant existing experiments.
The onset of slip motion at fluid-solid boundaries is investigated as a function the reflectivity solid wall by means mesoscopic lattice Boltzmann model. Substantial flow observed for values below critical threshold. It shown that this may significantly affect conversion efficiency catalytic microchannels.
We present a mesoscopic model, based on the Boltzmann equation, for interaction between solid wall and nonideal fluid. an analytic derivation of contact angle in terms surface tension liquid-gas, liquid-solid, gas-solid phases. study dependency two free parameters which determine fluid boundaries, i.e. equivalent density wall-fluid potential molecular dynamics studies. compare analytical results obtained hydrodynamical limit profile expression with numerical simulations. also our two-phase...
We demonstrate that the effects of turbulent fluctuations have a striking resemblance to those microscale (thermal) in laminar flows, even higher order Knudsen number. This suggests there may be good basis for understanding turbulence terms Boltzmann kinetic theory. If so, better described 'mixing times' rather than more classical lengths'. Comparisons are made Reynolds-stress models.
An approach based on a lattice version of the Boltzmann kinetic equation for describing multiphase flows in nano- and microcorrugated devices is proposed. We specialize it to describe wetting-dewetting transition fluids presence nanoscopic grooves etched boundaries. This permits us retain essential supramolecular details fluid-solid interactions without surrendering---actually boosting---the computational efficiency continuum methods. The method used analyze importance conspiring effects...