Mesh

The meshing process is:

1. Create virtual topology to merge surfaces in order to simplify the geometry.

2. Create named selections (inlet, outlet1, outlet2, wall_artery and fluid_zone).

3. Add constraints to the automatic mesh (inflation mesh and body sizing).

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The videos below show you how to create the mesh for the fluid domain.

Virtual Topology:

<iframe width="600" height="338" src="//www.youtube.com/embed/WFx_FItaHSY" frameborder="0" allowfullscreen></iframe>

Summary of steps in the video above:

1. model -> insert -> virtual topology
2. highlight surfaces -> (right click) insert -> virtual cell
3. repeat the previous step to create other virtual cells

 
Comparison of surface mesh generated with/without using virtual topology

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Mesh generated without using virtual topology. There are more dense cell locations on the surface where the faces come together.

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Mesh generated after using virtual topology as shown in the video above. There are less dense cell locations on the surface. The remaining cell-dense regions can be fixed by setting minimum cell size as shown in the third video below.

Named Selection:

<iframe width="600" height="338" src="//www.youtube.com/embed/8NUixCggw2w" frameborder="0" allowfullscreen></iframe>

Summary of steps in the video above:

1. face selection filter -> select inlet surface -> (right click) create named selection -> inlet
2. repeat the steps above to create named selections for the outlet1, outlet2 and wall_artery
3. body selection filter -> select the whole body -> face selection filter -> unselect inlet, outlet1 and outlet 2 ->(right click) create named selection -> fluid_zone

Preview Surface Mesh:

<iframe width="600" height="338" src="//www.youtube.com/embed/lESMus1uS6Y" frameborder="0" allowfullscreen></iframe>

Summary of steps in the video above:

1. (find in the tree) mesh -> (right click) preview -> surface mesh

Note: To select or deselect multiple entities, use Ctrl+left click. For instance, to deselect the inlet after using "select all", Ctrl+click on it.  

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Inflation Mesh and Body Sizing:

<iframe width="600" height="338" src="https://www.youtube.com/embed/ILC5D0X-Paw1RZZCDTr_tA" frameborder="0" allowfullscreen></iframe>

Summary of steps in the video above:

1. (find in the tree) mesh -> insert -> sizing 
2. details of body sizing given below
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3. (find in the tree) mesh -> insert -> inflation
4. details of inflation given below
   Image Removed

Comparison of the surface mesh before and after changing the minimum mesh size:

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Named Selection:

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After setting minimum element size

Preview Inflation Mesh and Generate Volume Mesh:

<iframe width="601600" height="338" src="https://www.youtube.com/embed/nhV-x3yRNV0wGDlmRoOrF8" frameborder="0" allowfullscreen></iframe>

Summary of steps in the video above:

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Generate mesh

Go to Step 4: Physics Setup

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