An improved enthalpy-based lattice Boltzmann model for heat and mass transfer of the freezing process

2017 ◽  
Vol 111 ◽  
pp. 1477-1486 ◽  
Author(s):  
Xin Zhao ◽  
Bo Dong ◽  
Weizhong Li ◽  
Binlin Dou
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Lattice Boltzmann ◽  
Lattice Boltzmann Model ◽  
Freezing Process ◽  
Boltzmann Model

scholarly journals Numerical Simulation of Adsorption and Heat Transfer in Porous Media Using Lattice Boltzmann Method

2021 ◽  
Vol 2097 (1) ◽  
pp. 012024
Author(s):  
Jianhu Wang ◽  
Zhongdi Duan ◽  
Cheng Cheng ◽  
Wenyong Tang
Keyword(s):  
Heat Transfer ◽  
Mass Transfer ◽  
Fluid Flow ◽  
Lattice Boltzmann Method ◽  
Transfer Process ◽  
Lattice Boltzmann ◽  
Lattice Boltzmann Model ◽  
Adsorption Model ◽  
Boltzmann Method ◽  
Boltzmann Model

Abstract An adsorption model for fluid flow, heat, and mass transfer of the adsorbent bed was established. Based on the single relaxation time lattice Boltzmann method, a dual-distributed lattice Boltzmann model of density and concentration was established to solve the fluid flow and mass transfer process in the surface area of the adsorbent bed. The adsorption and heat transfer process on the surface of the adsorbent bed was incorporated into the dual-distributed lattice Boltzmann model by the fourth-order Runge-Kutta finite difference method. The multiphysics fields under Poiseuille flow were simulated by the presented model, and the adsorption capacity and temperature distribution during the adsorption process were investigated.

Comparative Study of the Flow in a Differentially Heated Cavity Using Thermal Lattice Boltzmann Method

2013 ◽  
Vol 300-301 ◽  
pp. 1122-1126
Author(s):  
Wei Shan Chen ◽  
Di Bo Dong ◽  
Zhen Xiu Hou ◽  
Sheng Jun Shi
Keyword(s):  
Mass Transfer ◽  
Nusselt Number ◽  
Lattice Boltzmann ◽  
Critical Value ◽  
Lattice Boltzmann Model ◽  
Circulation Rate ◽  
Boltzmann Method ◽  
Thermal Lattice Boltzmann ◽  
Boltzmann Model ◽  
Rayleigh Numbers

A D2Q9 thermal lattice Boltzmann model is applied to investigate the flow in a differentially heated cavity. The paper is intended to analysis the physics of heat and mass transfer in a closure cavity filled with air. For three Rayleigh numbers Ra, the aspect ratio K are varied from 1 to 10. Results of validation indicate this algorithm is reliable and easy for implementation. It can be found that the circulation rate of heat driven flow get lower when the K get higher. Also, the Nusselt number Nu tends to be approximated to 1 when K is higher than a critical value, which is depended on the value of Ra.

scholarly journals Macroscopic lattice Boltzmann model for heat and moisture transfer process with phase transformation in unsaturated porous media during freezing process

Open Physics ◽  
2017 ◽  
Vol 15 (1) ◽  
pp. 379-393 ◽  
Author(s):  
Wenyu Song ◽  
Yaning Zhang ◽  
Bingxi Li ◽  
Fei Xu ◽  
Zhongbin Fu
Keyword(s):  
Porous Media ◽  
Transfer Process ◽  
Lattice Boltzmann ◽  
Lattice Boltzmann Model ◽  
Experimental Result ◽  
Freezing Process ◽  
Unsaturated Porous Media ◽  
Proposed Model ◽  
Heat And Moisture ◽  
Boltzmann Model

AbstractIn the current study, a macroscopic lattice Boltzmann model for simulating the heat and moisture transport phenomenon in unsaturated porous media during the freezing process was proposed. The proposed model adopted percolation threshold to reproduce the extra resistance in frozen fringe during the freezing process. The freezing process in Kanagawa sandy loam soil was demonstrated by the proposed model. The numerical result showed good agreement with the experimental result. The proposed model also offered higher computational efficiency and better agreement with the experimental result than the existing numerical models. Lattice Boltzmann method is suitable for simulating complex heat and mass transfer process in porous media at macroscopic scale under proper dimensionless criterion, which makes it a potentially powerful tool for engineering application.

Sign in / Sign up

Export Citation Format

Share Document