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Free Meshing vs Mapped Meshing

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Free Meshing vs Mapped
Meshing
The Debate Continues…
Free Meshing
• ANSYS has a free
meshing routine and
its easy to use
• Will it give good
results when
compared with
mapped meshing?
Free Meshing
• Create the Geometry
Free Meshing
• Create the Geometry
• Define the Mesh Size
>Preprocessor
>Meshing>Size
Controls>Manual
Size>Global>Size
Free Meshing
• Create the Geometry
• Define Mesh Size
>Preprocessor
>Meshing>Size
Controls>Smart
Size>Basic
Free Meshing
• Create the Geometry
• Define Mesh Size
• Free Mesh
>Meshing>Mesh>
Areas>Free>Select
the Area to Mesh
Free Meshing
• Good-easy to create the
geometry
-meshing is fast
• Bad-some triangular
elements are used
-some elements may
have poor aspect
ratios
Mapped Meshing
• Create the Geometry
-create the geometry
in smaller sub areas
using key points and
lines
Mapped Meshing
• Create the Geometry
• Concatenate Lines
-sub areas must be
bounded by 3 or 4
lines
-concatenate lines
around areas until
each sub area has no
more than 4 boundary
lines
Mapped Meshing
• Create the Geometry
• Concatenate Lines
• Mesh each area
separately
Meshing>Mesh>
Areas>Mapped>3 or
4 sided
Mapped Meshing
• Create the Geometry
• Concatenate Lines
• Mesh each area
separately
• Optional: Check
Mesh
-Meshing>Check
Mesh>Individual
Elm>Plot
Warning/Error
Elements
Mapped Meshing
• Good
-Lots of control over meshing
and elements
• Bad
-takes a lot more time to
create the geometry
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