Thin Mesher Reference


Automatic Correction	This option is activated by default. To ensure that a continuous, valid mesh is obtained, leave this option activated where possible. When activated, this option allows the thin mesher model to use cells other than prisms in thin regions when a locally invalid mesh is originally obtained. Deactivate this option to not allow the thin mesher to use cells other than prisms.
Customize Thickness Threshold	By default, all parts are marked as potentially thin and the thin mesher determines automatically which parts are thin and which are bulk. Activate this option to override this behavior and supply an appropriate cut-off size, where geometry that is larger than this cut-off size is treated as bulk. When activated, this option creates the node: Default Controls > Thin Mesher Maximum Thickness The thin mesher treats geometry that is larger than the specified thickness threshold as bulk. Note that the purpose of this option is to exclude regions from the thin mesher rather than mark regions as thin. When deactivated, the thin mesher determines automatically which parts of the geometry are thin and which are not.
Customize Surface Size Ratio Threshold	Allows you to specify which parts of a mesh are considered thin based on the product of the local surface cell size and a Thin Mesher Surface Size Ratio that you specify. When activated, this option creates the nodes: Default Controls > Thin Mesher Surface Size Ratio The thin mesher determines which parts of the geometry are thin based on the product of the local surface cell size and the Thin (Mesher/Solid) Surface Size Ratio that you specify. Any geometry that is thinner than both this size and the thickness threshold is meshed with prismatic layers. When deactivated, the thin mesher determines automatically which parts of the geometry are thin and which are not.
Automatic Thin/Bulk Shape Detection	This option, which is available when using the Parts Based Meshing approach, determines if all parts are thin or not. If parts are considered thin, the parts are meshed with the thin mesher which creates prismatic cells in thin areas, and core volume cells elsewhere. Activate the option so that parts are automatically detected as thin or bulk. Only parts which are determined as thin are meshed with the Thin Mesher. Non-thin parts are meshed with the core volume mesher that is selected. Deactivate this option to consider all parts as thin.
Optimization Cycles	Increasing this value, increases the quality of the volume mesh, at the expense of increased CPU time in generating the mesh. The default is set to 1 and the recommended range is from 1 through 8.
Quality Threshold	Allows you to specify the maximum cell quality value that you want the mesher to aim for. Increasing this value increases the cell quality, at the expense of increased CPU time in generating the mesh. The default is set to 0.4 and the recommended range is from 0.4 through 1.0.
Force Thin # Layers	By default, this option is deactivated and the thin mesher can reduce the number of thin layers depending on the quality of the cells. Activate this option to force the thin mesher to use the number layers that you specify, regardless of the quality implications.

Right-click Actions

The following right-click action is available under the Automated Mesh > Meshers > Thin Mesher node.

Restore Default Settings: Allows you to restore all properties to the default value.

Number of Thin Layers

The following nodes are available for you to specify the number of prismatic layers that the thin mesher creates in geometries that are considered to be thin:

Automated Mesh > Default Controls > Number of Thin Layers

Number of Thin Layers Properties


Number of Layers	The default value is 1. Any integer value greater than 0 can be specified. For a geometry that contains both thick and thin sections, a value between 1 through 5 is suggested in order to prevent low quality cells or meshing failure. A minimum of two layers are always produced when using polygonal prisms. No such restriction exists when using triangular prisms.

Thin Mesher Maximum Thickness

The following nodes are available for you to specify the threshold thickness, below which the geometry is considered to be thin.

Default Controls > Thin Mesher Maximum Thickness

For these nodes to be accessible, activate the Customize Thickness Threshold model property.

Thin Mesher Maximum Thickness


Size Type	The default value of 0.0 m indicates that the thin mesher model determines the thin/non-thin thickness threshold itself. Specifying a value greater than zero tells the thin mesher to search through the geometry and determine the thin sections (based on the supplied value). Surfaces that do not meet the proximity threshold are considered non-thin and are meshed with a non-prismatic mesh type.
	Relative to base	Set the size relative to the base size in Percentage of Base
	Absolute	Set the size in Absolute Size with length units.

Thin Mesher Surface Size Ratio

The following nodes are available for you to specify the ratio which is used to determine which parts of a mesh are considered thin. Any geometry that is thinner than, the product of the local surface cell size and the ratio that you specify, and the thickness threshold, is meshed with prismatic layers.

Thin Mesher Surface Size Ratio Properties


Thin Mesher Surface Size Ratio	This ratio is multiplied by the local surface size to provide the thickness threshold – below which geometry is considered thin. Therefore, the surface size settings on a face determine whether to mesh with prismatic layers or not. This option is available when the customize surface size ratio threshold option is activated. This ratio is set to 4.0 by default.