Lattice Boltzmann Simulations on the Charging Procedure of a Solar Storage Tank With Immersed Phase Change Materials

2015 ◽  
Author(s):  
Yan Su
Keyword(s):  
Phase Change ◽  
Lattice Boltzmann ◽  
Storage Tank ◽  
Phase Change Materials ◽  
Energy Charge ◽  
Transient Temperature ◽  
Lattice Boltzmann Simulations ◽  
Simulation Results ◽  
Boltzmann Method ◽  
Temperature And Flow Fields

The transient charging procedure of a rectangular solar storage tank with immersed tubes filled by phase change materials (PCM) have been simulated by a Lattice Boltzmann Method (LBM). The energy charge speeds for the storage tank with and without the PCM have been compared. The transient temperature and flow fields including melting of the PCM are also presented. The transient interfaces between fluid and solid are clearly shown. The enhancement of the energy storage capability due to the PCM is calculated based on the simulation results. Also the effects of the arrangement of the PCM are discussed.

scholarly journals Microflow Simulations via the Lattice Boltzmann Method

2011 ◽  
Vol 9 (5) ◽  
pp. 1128-1136 ◽  
Author(s):  
Nikolaos Prasianakis ◽  
Santosh Ansumali
Keyword(s):  
Exact Solution ◽  
Knudsen Number ◽  
Lattice Boltzmann ◽  
Order Of Convergence ◽  
Kinetic Equations ◽  
Closed Form Solutions ◽  
Lattice Boltzmann Simulations ◽  
Simulation Results ◽  
Boltzmann Method ◽  
Stationary Planar

AbstractThe exact solution to the hierarchy of nonlinear lattice Boltzmann kinetic equations, for the stationary planar Couette flow for any Knudsen number was presented by S. Ansumali et al. [Phys. Rev. Lett., 98 (2007), 124502]. In this paper, simulation results at a non-vanishing value of the Knudsen number are compared with the closed-form solutions for the higher-order moments. The order of convergence to the exact solution is also studied. The lattice Boltzmann simulations are in excellent agreement with the exact solution.

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