Thesis for degree: Licentiate of Engineering

Figure 4.4: Velocity field [lu/ts] in part of the porous media domain with a porosity of 0.40.
Thirdly, a porous geometry is tested for simulation of an SOFC anode. In Figure 4.4, a porous
domain is provided with a porosity of 0.4. Here the velocity field is given to illustrate that
LBM can easily handle a porous domain. Note that only part of the porous domain is shown
from Figure 3.2 to see the velocity arrows better and the following Figure 4.5 and 4.6 show
the whole modeled domain as can be seen in Figure 3.2. The velocity arrows provide an
understanding of the bounce-back theory and provide intuitive feeling for the flow process in
the porous media.
0.8
0.75
0.7
0.65
0.6
0.55
0.5
0.45
0.4
Figure 4.5: Mole fraction distribution of H 2 in a porous media with a porosity of 0.40.
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