Laminar Flow
1
In the Model Builder window, under Monolith Reactor Model click Laminar Flow
2
In the Settings window for Laminar Flow, locate the Domain Selection section.
3
From the Selection list, choose Porous and Free Flow Domains.
4
Locate the Physical Model section. From the Compressibility list, choose Compressible flow (Ma<0.3).
5
Select the Enable porous media domains checkbox.
Fluid Properties 1
1
In the Model Builder window, expand the Laminar Flow node, then click Fluid Properties 1.
2
In the Settings window for Fluid Properties, locate the Fluid Properties section.
3
From the μ list, choose From material.
Wall 1
1
In the Model Builder window, click Wall 1.
2
In the Settings window for Wall, locate the Boundary Condition section.
3
From the Wall condition list, choose Slip.
Inlet 1
1
In the Model Builder window, click Inlet 1.
2
In the Settings window for Inlet, locate the Boundary Selection section.
3
From the Selection list, choose Flow Inlet.
4
Locate the Boundary Condition section. From the list, choose Mass flow.
5
Locate the Mass Flow section. In the m text field, type m_tot_in.
Outlet 1
1
In the Model Builder window, click Outlet 1.
2
In the Settings window for Outlet, locate the Boundary Selection section.
3
From the Selection list, choose Flow Outlet.
Porous Medium 1
1
In the Physics toolbar, click  Domains and choose Porous Medium.
2
Select Domains 3 and 5 only.
Porous Matrix 1
1
In the Model Builder window, click Porous Matrix 1.
2
In the Settings window for Porous Matrix, locate the Matrix Properties section.
3
From the κ list, choose User defined. From the list, choose Diagonal.
4
Specify the κ matrix as
kappa_radial
0
0
kappa_axial
The sequence of nodes for the 2D axisymmetric Model in the Model Builder should match this figure.
Before solving the problem numerically, the geometry needs to be discretized with a mesh.