Global Mesh Setup

  The Global Mesh Setup options provide the general and specific meshing algorithm parameters used for the various meshers. The global mesh parameters are stored in the geometry file and help define global controls for the following:

Figure 236: Global Mesh Setup Parameters

Global Mesh Setup Parameters

For a comprehensive list of the different meshing parameters and which methods they apply to, see Table 3: Parameters for Surface Meshing Methods, Table 4: Parameters for Volume Meshing Methods, and Table 5: Parameters for Other Meshing Methods.

Table 3: Parameters for Surface Meshing Methods

 

Surface Meshing Methods

Mesh Parameters

Autoblock

Patch Dep.

Patch Indep.

Shrinkwrap

Global Parameters

Max Element*

Y

Y

Y

Y

Min Size Limit*

N

Y

Y

N

Elements in gap

N

N

Y

N

Refinement

N

N

Y

N

Periodicity

N

N

Y

N

Part Meshing Parameters

Internal Wall

N/A

N/A

N/A

N/A

Thin Wall

N/A

N/A

N/A

N/A

Hexa-core

N/A

N/A

N/A

N/A

Prism setting

N/A

N/A

N/A

N/A

Surface Meshing Parameters

Ignore Size

Y

Y

N

N

Surface mesh type

N/A

N/A

N/A

N/A

Prism Meshing Parameters: See Table 5: Parameters for Other Meshing Methods

Surface Parameters

Max size*

Y

Y

Y

Y

Height

N/A

N/A

N/A

N/A

Height ratio

N/A

Y

N/A

N/A

No. of layers

N/A

N/A

N/A

N/A

Tetra width

N/A

N/A

Y

N/A

Tetra size ratio

N/A

N/A

Y

N/A

Min Size Limit*

N

N

Y

N

Max deviation*

Y

Y

Y

N

Surface mesh type

Y

Y

Y

N/A

Curve Parameters

Max size*

Y

Y

Y

N

No. of nodes

Y

Y

Y

N

Height

N

Y

N

N

Height ratio

N

Y

N

N

No. of layers

N

Y

N

N

Tetra width

N/A

N/A

Y

N/A

Min Size Limit*

Y

N

Y

N

Max deviation*

Y

N

Y

N

Bunching

N

Y

N

N

     

Densities*

N

N

Y

N

Connectors

N

Y

Y

N

*Scale Factor is applied


Table 4: Parameters for Volume Meshing Methods

 

Volume Meshing Methods

Mesh Parameters

Octree

Delaunay

Adv. Front

Hexa Dom.

Cartesian

Global Parameters

Max Element*

Y

Y

Y

Y

N

Min Size Limit*

Y

N/A

N/A

N/A

N

Elements in gap

Y

N

N

N

N

Refinement

Y

N/A

N/A

N/A

N

Periodicity

Y

N/A

N/A

N/A

N

Part Meshing Parameters

Internal Wall

Y

N/A

N/A

N/A

N

Thin Wall

Y

N/A

N/A

N/A

N

Hexa-core

Y

Y

N

N/A

N/A

Prism setting

Y

Y

Y

N/A

N

Surface Meshing Parameters

Ignore Size

N

N/A

N/A

N/A

N

Surface mesh type

N

Y

Y

Y

N/A

Prism Meshing Parameters: See Table 5: Parameters for Other Meshing Methods

Surface Parameters

Max size*

Y

N/A

N/A

N/A

Y

Height

N/A

N/A

N/A

N/A

N

Height ratio

N/A

N/A

N/A

N/A

N

No. of layers

N/A

N/A

N/A

N/A

N

Tetra width

Y

N

N

N

N/A

Tetra size ratio

Y

N

N

N

N/A

Min Size Limit*

Y

N/A

N/A

N/A

Y

Max deviation*

Y

N/A

N/A

N/A

N

Surface mesh type

N

Y

Y

Y

N/A

Curve Parameters

Max size*

Y

N/A

N/A

N/A

N

No. of nodes

N

N/A

N/A

N/A

N

Height

N/A

N/A

N/A

N/A

N

Height ratio

N/A

N/A

N/A

N/A

N

No. of layers

N/A

N/A

N/A

N/A

N

Tetra width

Y

N

N

N

N/A

Min Size Limit*

Y

N/A

N/A

N/A

N

Max deviation*

Y

N/A

N/A

N/A

N

Bunching

N

N/A

N/A

N/A

N

      

Densities*

Y

Y

N

N

Y

Connectors

Y

Y

Y

Y

N

*Scale Factor is applied


Table 5: Parameters for Other Meshing Methods

 

Other Methods

Mesh Parameters

post inflation Prism

pre inflation (Fluent Meshing) Prism

Blocking

Global Parameters

Max Element*

Y

Y

Y

Min Size Limit*

N/A

N/A

N

Elements in gap

N

Y

N

Refinement

N/A

N/A

N

Periodicity

Y

N

Y

Part Meshing Parameters

Internal Wall

N/A

N/A

N/A

Thin Wall

N/A

N/A

N/A

Hexa-core

N/A

N/A

N/A

Prism setting

N/A

N/A

Y

Surface Meshing Parameters

Ignore Size

N/A

N/A

N

Surface mesh type

N/A

N/A

N

Prism Meshing Parameters

Growth law

Y

Y

N

Initial height

Y

Y

See Offset Methods in Additional pre inflation (Fluent Meshing) settings

Y

Height ratio

Y

Y

Y

Number of layers

Y

Y

Y

Total height

Y

Y

See Offset Methods in Additional pre inflation (Fluent Meshing) settings

Y

Fillet Ratio

Y

Y

(used to derive offset-weight)

N/A

Max prism angle

Y

Y

(used to derive project-adjacent-angle)

N/A

Max height over base

Y

Y

(used to derive min-aspect-ratio)

N/A

Prism height limit factor

Y

Y

See Offset Methods in Additional pre inflation (Fluent Meshing) settings

Y

Smoothing Options

   

Number of volume smoothing steps

Y

Y

See note in Smoothing Options

N/A

Advanced Prism Meshing Parameters

Auto Reduction

N/A

Y

See note in Advanced Prism Meshing Parameters

N/A

Stair Step

N/A

Y

See note in Advanced Prism Meshing Parameters

N/A

Surface Parameters

Max size*

N/A

N/A

Y

Height

Y

Y

Y

Height ratio

Y

Y

Y

No. of layers

Y

Y

Y

Tetra width

N/A

N/A

N/A

Tetra size ratio

N/A

N/A

N/A

Min Size Limit*

N/A

N/A

N

Max deviation*

N/A

N/A

N

Surface mesh type

N/A

N/A

N

Curve Parameters

Max size*

N/A

N/A

Y

No. of nodes

N/A

N/A

Y

Height

Y

Y

Y

Height ratio

Y

Y

Y

No. of layers

Y

Y

Y

Tetra width

N/A

N/A

N/A

Min Size Limit*

N/A

N/A

N

Max deviation*

N/A

N/A

N

Bunching

N/A

N/A

N

 

Densities*

N/A

N/A

N

Connectors

N/A

N/A

N

*Scale Factor is applied