Lattice-Boltzmann simulations of the thermally driven 2D square cavity at high Rayleigh numbers
نویسندگان
چکیده
منابع مشابه
Simulation of high Rayleigh number natural convection in a square cavity using the lattice Boltzmann method
A thermal lattice Boltzmann method based on the BGK model has been used to simulate high Rayleigh number natural convection in a square cavity. The model uses the double populations approach to simulate hydrodynamic and thermal fields. The traditional lattice Boltzmann method on a uniform grid has unreasonably high grid requirements at higher Rayleigh numbers which renders the method impractica...
متن کاملSimulation of Lid Driven Cavity Flow at Different Aspect Ratios Using Single Relaxation Time Lattice Boltzmann Method
Abstract Due to restrictions on the choice of relaxation time in single relaxation time (SRT) models, simulation of flows is generally limited base on this method. In this paper, the SRT lattice Boltzmann equation was used to simulate lid driven cavity flow at different Reynolds numbers (100-5000) and three aspect ratios, K=1, 1.5 and 4. The point which is vital in convergence of this scheme ...
متن کاملFinite Volume Simulation of 2-d Steady Square Lid Driven Cavity Flow at High Reynolds Numbers
In this work, computer simulation results of steady incompressible flow in a 2-D square lid-driven cavity up to Reynolds number (Re) 65000 are presented and compared with those of earlier studies. The governing flow equations are solved by using the finite volume approach. Quadratic upstream interpolation for convective kinematics (QUICK) is used for the approximation of the convective terms in...
متن کاملNatural Convection and Entropy Generation in Γ-Shaped Enclosure Using Lattice Boltzmann Method
This work presents a numerical analysis of entropy generation in Γ-Shaped enclosure that was submitted to the natural convection process using a simple thermal lattice Boltzmann method (TLBM) with the Boussinesq approximation. A 2D thermal lattice Boltzmann method with 9 velocities, D2Q9, is used to solve the thermal flow problem. The simulations are performed at a constant Prandtl number (Pr ...
متن کاملLattice Boltzmann simulations of electrostaticplasma
A Lattice Boltzmann algorithm to study the 3-D electrostatic-turbulence dynamics in thermonuclear plasmas is presented. The ion continuity, momentum and pressure equations are reproduced with the electrons being described by the adiabatic response. Applications to the study of 2-D turbulence show that the heat ux is reduced at a level much smaller than the quasilinear estimate. The particle and...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Computational Physics
سال: 2014
ISSN: 0021-9991
DOI: 10.1016/j.jcp.2014.06.047