lattice Boltzmann method | Ricerc@Sapienza

Increase lattice Boltzmann method ability to simulate slip flow regimes with dispersed CNTs nanoadditives inside: Develop a model to include buoyancy forces in distribution functions of LBM for slip velocity

In this study, the mixed convection of flow in a microchannel containing nanofluid is simulated by the Lattice Boltzmann Method. The water/functionalized multi-wall carbon nanotubes nanofluid is selected as the working fluid. The cold nanofluid passes through the warm walls of the microchannel to cool them down. The buoyancy forces caused by the mass of the nanofluid change the hydrodynamic properties of the flow.

Develop the nano scale method of lattice Boltzmann to predict the fluid flow and heat transfer of air in the inclined lid driven cavity with a large heat source inside, Two case studies: Pure natural convection & mixed convection

Nano scale method of lattice Boltzmann is developed to predict the fluid flow and heat transfer of air through the inclined lid driven 2-D cavity while a large heat source is considered inside it. Two case studies are supposed: first one is a pure natural convection at Grashof number from 400 to 4000 000 and second one is a mixed convection at Richardson number from 0.1 to 10 at various cavity inclination angles.

Lattice Boltzmann method to simulate convection heat transfer in a microchannelunder heat flux: gravity and inclination angle on slip-velocity

Purpose–The purpose of this paper is to improve the lattice Boltzmann method’s ability to simulate amicroflow under constant heatflux. Design/methodology/approach–Develop the thermal lattice Boltzmann method based on doublepopulation of hydrodynamic and thermal distribution functions. Findings–The buoyancy forces, caused by gravity, can change the hydrodynamic properties of theflow.As a result, the gravity term was included in the Boltzmann equation as an external force, and the equationswere rewritten under new conditions.

Develop lattice Boltzmann method and its related boundary conditions models for the benchmark oscillating walls by modifying hydrodynamic and thermal distribution functions

Present works aims to develop the lattice Boltzmann method ability to simulate the periodic
supposed problems. Hence, a two-dimensional rectangular enclosure is considered so that its top
cold lid oscillates horizontally with time. The stationary sidewalls are kept insulated. It would be
necessary to present an appropriate boundary condition model of LBM for the oscillating lid, based
on the hydrodynamic and thermal distribution functions. The influences of various lid oscillation