New hybrid finite volume-thermal lattice Boltzmann method, based on multi relaxation time collision operator

Salimi, M.R.; Alizadeh-Seresht, E.; Taeibi-Rahni, M.

doi:10.1016/j.ijheatmasstransfer.2019.04.130

Cited by 5 publications

(2 citation statements)

References 32 publications

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“…In order to achieve the higher numerical stability, the passive scalar approach commonly used is swapped to a hybrid thermal model [31][32][33]. Within the hybrid formulation, the advection/diffusion equation is solved by means of the conventional computational fluid dynamics technique instead of additional lattice Boltzmann equation for temperature/concentration.…”

Section: Heat Transfer Solvermentioning

confidence: 99%

Interaction of Radiation and Turbulent Natural Convection: A Pseudo-Direct Numerical Study

Nee¹,

Chamkha²

2022

AAMM

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This paper presents a hybrid lattice Boltzmann solver for turbulent buoyancy-driven flow coupled with surface thermal radiation. The two-relaxation time scheme for the Boltzmann equation combined with the implicit finite difference scheme for the energy equation is implemented to compute the heat transfer and fluid flow characteristics. The accuracy and robustness of the hybrid approach proposed in this study are assessed in terms of the numerical and experimental data of other researchers. Upon performing the simulation, the Rayleigh number is ranged from 108 to 1010 whereas the surface emissivity is changed from zero to unity. During computations, it is found that the overall temperature of the cavity is increased as a result of enhancing the surface radiation. Convective plumes are formed both at the isothermal and the thermally-insulated walls with the Ra≥10 9 and ε≥0.6. In the conditions under study, the overall heat transfer rate is raised by around 5% when taking into account the surface thermal radiation.

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Section: Heat Transfer Solvermentioning

confidence: 99%

Interaction of Radiation and Turbulent Natural Convection: A Pseudo-Direct Numerical Study

Nee¹,

Chamkha²

2022

AAMM

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“…Recently, in order to overcome the shortcomings of LBM lattice algorithm, such as the difficulty in solving large Ra problems, a discrete velocity model with a certain tensor symmetry, namely lattice, needs to be included in the calculation, and its own model system is not perfect. Various models with a wider range of applications have been proposed, such as multiple relaxation LBM lattice model [11], entropy LBM lattice model, LBM lattice model for axisymmetric problems, pre collision processing, etc. The LBM grid algorithm was used to simulate the natural convection and radiative heat dissipation of a cylindrical heat source, and the applicability of the method was verified by experiments.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of magnetic fluid thermal coupling of cylindrical heat source based on LBM lattice algorithm

Jie

Yang

2022

Phys. Scr.

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In order to improve the accuracy of numerical simulation of magnetic fluid thermal coupling of cylindrical heat source, a numerical simulation method of magnetic fluid thermal coupling of cylindrical heat source based on LBM grid algorithm was studied. Based on the theoretical model of natural convection and radiative heat dissipation of cylindrical heat source, the boundary conditions were set, and the thermal coupling performance of flow field and temperature field in the process of natural convection and radiative heat dissipation of cylindrical heat source was simulated by LBM grid algorithm. Simulation results show that the relative error between simulation results and experimental results is less than 1.5%. The results show that this method can accurately simulate the magnetofluid-thermal coupling of cylindrical heat source. With the increase of Rayleigh number, different numerical solutions appear: steady state solution when Rayleigh number is 105, periodic oscillation solution when Rayleigh number is 106, chaotic solution when Rayleigh number is 107.

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Heat transfer and entropy generation analysis in a three-dimensional impinging jet porous heat sink under local thermal non-equilibrium condition

Salimi

Taeibi-Rahni

Rostamzadeh

2020

International Journal of Thermal Sciences

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New hybrid finite volume-thermal lattice Boltzmann method, based on multi relaxation time collision operator

Cited by 5 publications

References 32 publications

Interaction of Radiation and Turbulent Natural Convection: A Pseudo-Direct Numerical Study

Interaction of Radiation and Turbulent Natural Convection: A Pseudo-Direct Numerical Study

Numerical simulation of magnetic fluid thermal coupling of cylindrical heat source based on LBM lattice algorithm

Heat transfer and entropy generation analysis in a three-dimensional impinging jet porous heat sink under local thermal non-equilibrium condition

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