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Minor fixes
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lpsaavedra committed Nov 21, 2024
1 parent 18740ac commit c62eb5d
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Showing 2 changed files with 17 additions and 15 deletions.
Original file line number Diff line number Diff line change
Expand Up @@ -44,15 +44,15 @@ In this example, we are simulating a cylinder shaped spouted bed. We introduce t
:name: geometry
:height: 15cm

The geometry of the bed was created using `Pointiwise <../../../tools/pointwise/pointowise.html>`_. An overview of the mesh is:
The geometry of the bed was created using `Pointwise <../../../tools/pointwise/pointwise.html>`_. An overview of the mesh is:

.. image:: images/mesh.png
:alt: The geometry and boundary conditions
:align: center
:name: mesh_ver
:height: 10cm

In unresolved CFD-DEM, the averaging volume used to calculate the void fraction needs to be large enough to contain several particles (>10). Since the averaging volume used in the quadrature-centred method is generally related to the cell volume, this introduces a limitation on the cell size. In general, the averaging volume, which in this case is controlled by the cell size, should be approximately three time larger than the diameter of the particles in order to get stable calculation.
In unresolved CFD-DEM, the averaging volume used to calculate the void fraction needs to be large enough to contain several particles (>10). Since the averaging volume used in the quadrature-centred method is generally related to the cell volume, this introduces a limitation on the cell size. In general, the averaging volume, which in this case is controlled by the cell size, should be approximately three times larger than the diameter of the particles in order to get stable calculation.

.. code-block:: text
Expand Down Expand Up @@ -189,8 +189,7 @@ We set the inlet velocity to 2.5 m/s, and the background velocity to 0.5 m/s on
subsection boundary conditions
set time dependent = false
set number = 5
subsection bc 0 #outlet
set id = 3
set type = outlet
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Expand Up @@ -11,12 +11,12 @@ set dimension = 3
#---------------------------------------------------

subsection simulation control
set method = bdf2
set number mesh adapt = 0
set output frequency = 50
set time end = 5
set time step = 0.001
set output path = output/
set method = bdf2
set number mesh adapt = 0
set output frequency = 50
set time end = 5
set time step = 0.001
set output path = output/
end

#---------------------------------------------------
Expand All @@ -39,6 +39,10 @@ subsection FEM
set pressure order = 1
end

#---------------------------------------------------
# Timer
#---------------------------------------------------

subsection timer
set type = iteration
end
Expand Down Expand Up @@ -118,7 +122,6 @@ end
# Boundary Conditions
#---------------------------------------------------


subsection boundary conditions
set time dependent = false
set number = 5
Expand All @@ -144,16 +147,16 @@ subsection boundary conditions
end

subsection bc 2 #wall
set id = 6
set id = 6
set type = slip
end

subsection bc 3 #channel_wall
set id = 5
set id = 5
set type = slip
end
subsection bc 4 #bed_wall_bottom

subsection bc 4 #bed_wall_bottom
set id = 4
set type = function
subsection u
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