LATTICE BOLTZMANN MODELING FOR SLIP FLOW AND HEAT TRANSFER OF GASEOUS FLUID IN CONFINED POROUS MEDIA

2018 ◽  
Author(s):  
Zhenyu Liu ◽  
Zhiyu Mu ◽  
Huiying Wu
Keyword(s):  
Heat Transfer ◽  
Porous Media ◽  
Lattice Boltzmann ◽  
Slip Flow ◽  
Flow And Heat Transfer ◽  
Lattice Boltzmann Modeling

Nusselt Number Prediction for Slip Flow in Confined Porous Media Based on Lattice Boltzmann Method

2019 ◽  
Author(s):  
Ammar Tariq ◽  
Zhenyu Liu ◽  
Zhiyu Mu ◽  
Huiying Wu
Keyword(s):  
Heat Transfer ◽  
Porous Media ◽  
Nusselt Number ◽  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Slip Flow ◽  
Flow And Heat Transfer ◽  
Prime Concern ◽  
Multiple Relaxation Time ◽  
Boltzmann Method

Abstract Understanding flow and heat transfer in porous media is a matter of prime concern for micro devices. In this work, slip flow and heat transfer of gaseous fluid through the confined porous media is numerically simulated using a multiple-relaxation-time lattice Boltzmann method. The method is employed using an effective curved boundary treatment based on non-equilibrium extrapolation and counter-extrapolation methods. Nusselt number prediction for varying porosity, Knudsen and Reynolds number are studied. Based on the obtained numerical results, it is proved that the current technique can be used to effectively model slip flow and heat transfer at pore-scale.

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