Select the Defaults tab of the Panels to set default values for various parameters to be used during the creation of any new entities after
the default value has been set or changed. Settings on the Defaults panel do not impact existing entities.
Settings made on the Defaults panel affect only entities created after default values are entered.
The Characteristic Grid/DB/Source Length information is displayed at the top of the Defaults panel. This helps you decide whether your
default settings are suitable for your geometry or not.
The Defaults panel is logically broken up into four groups of settings: those that
affect new connectors, those that affect new structured domains and blocks, those that affect
new unstructured domains and blocks, and finally, those that affect the size field. This
sub-section only provides a general overview of the settings available as defaults with
reference to their primary descriptions elsewhere in this User Manual. Any commands unique to
the Defaults panel are explained here.
Note: Changing default values does not change entities which have already been created. New defaults only affect those entities newly
created after the defaults change.
The commands inside the Connector frame are organized in two sub-frames: Dimension and Distribution.
The Dimension frame provides default settings for connector Dimension, Average
Δs, Max. Dimension, Max. Angle and Max. Deviation.
The default number of grid points is calculated based on the definition of Dimension or Average Δs. If the Max. Angle
and/or Max. Deviation parameters are specified, points may be added to the new connectors in order to satisfy the definition of the mentioned
parameters. Max. Dimension is unique to the Defaults panel and sets a dimension cap for all new connectors. This setting only affects use of
the Average Δs, Max. Angle and Max. Deviation options since otherwise connector dimension using these settings would be
Note that the uses of Max. Angle and Max. Deviation are also described in detail in
the Dimension, Distribute
and Solve sections.
The Use Surface Curvature parameter is used to refine the connector being created based on the curvature of its underlying database surface. If this option is
checked on, Pointwise computes the curvature of the underlying database surface at each connector location, and in conjunction with the Max. Angle
and Max. Deviation options, refines the connector as needed. If Automatic is chosen as the default distribution function Type, the
capability of Use Surface Curvature is extended to the generation of a connector
spacing size field which takes into account database and source entities in
the proximity of newly created connectors as well as the Min. Spacing parameter and
the size field Background Spacing and Decay parameters. See the Distribute,
Functions description for more details.
The Distribution frame provides default settings for Begin. Δs,
End. Δs and grid point distribution Type. These settings are described
in detail for the Distribute section.
Below Type is a field to enter a Min. Spacing used in conjunction with the
Automatic distribution function. More information on the Automatic
distribution function and Min. Spacing can be found under Distribute,
Functions. Unique to the
Distribution frame is the ability to turn off the default behavior of automatically
adding break points at the common node where connectors are joined. This is done by unchecking
the Keep Break Points option. When Keep Break Points is unchecked, Keep
Distribution becomes available and is on by default. With Keep Distribution
checked on and Keep Break Points unchecked, a
General distribution results
in joined connectors without interior break points. If neither option is checked on, the default
Tanh distribution results in joined connectors with no interior breakpoints and equal spacing.
Structured Domains and Blocks
The Structured Domains and Blocks frame provides default settings for Interior and Boundary control functions for both structured
domains and blocks. These settings are described in detail in
the Attributes Tab sub-section within
the Structured Domains & Blocks section.
Use the Structured Domains and Blocks frame of the Defaults panel to set defaults for those entities.
Unstructured Domains and Blocks
The commands inside the Unstructured Domains and Blocks frame are organized in three
major sub-frames: Domains, Blocks, and T-Rex Boundary Conditions. The
Domains frame (shown below) provides default settings for the isotropic and T-Rex
attributes for newly created domains. These attributes are described in detail in the
and T-Rex Tab sub-sections
respectively. These sub-sections are located within
the Unstructured Domains section.
Unique to the Defaults panel is the Initialize Interior checkbox for unstructured domains (shown in left image below). When Initialize
Interior is unchecked, no interior points are inserted into newly created unstructured domains.
Use the Isotropic and T-Rex sub-frames within the Unstructured Domains and Blocks frame in the Defaults panel to set defaults
for the isotropic and T-Rex portions of newly created domains.
The Blocks frame (shown below) provides default settings for Isotropic tetrahedral cells, for T-Rex attributes, and
for Voxel cells. The Isotropic attributes (shown in the left image below) are explained in detail in
the Attributes Tab section. The T-Rex attributes (shown in the
center image below) are explained in detail in the T-Rex Tab section. Last but not least,
the Voxel attributes (shown in the right image below) are explained in detail in
the Attributes Tab for voxel blocks and in
the Attributes Tab for unstructured blocks where Voxel is the
selected Algorithm. Keep in mind that these default setting are only applied to newly created unstructured blocks.
Use the Isotropic and T-Rex sub-frames within the Unstructured Domains and Blocks frame in the Defaults panel to set defaults for the
isotropic and anisotropic portions of newly created unstructured blocks. Use the Voxel sub-frame to set defaults for newly created voxel blocks.
The T-Rex Boundary Conditions frame (shown below) is located at the end of the Unstructured
Domains and Blocks frame. This frame contains a drop-down list and three text entry
fields. The drop-down list, allows you to select a default T-Rex boundary condition type. This
default type is automatically assigned to new T-Rex boundary conditions created using the tools
in either the 2D T-Rex
Boundary Conditions Tab
or the 3D T-Rex
Tab. Furthermore, if the selected default boundary condition type is either Wall, Angle,
Aspect Ratio, or Max. Aspect Ratio this type is also automatically assigned to
new T-Rex boundary conditions created by the
Apply T-Rex command.
The Auto option in the BC Type list is unique to the Defaults
panel. With Auto selected, Off is applied as the default BC when creating
new BCs via the Solve command. The Angle field determines which type of BC is
applied when using the Apply T-Rex command.
If Angle is specified, then an Angle BC is applied when using
the Apply T-Rex command, otherwise a Wall BC is applied. The Aspect Ratio field is currently not
considered when using the Auto BC Type.
The first text entry field, Wall Δs, allows you to specify a default T-Rex
wall spacing value; the second one, Angle, allows you to specify a default 2D T-Rex
turning angle value; the third entry field, Aspect Ratio, allows you to specify a
default 2D T-Rex aspect ratio value. All these settings are used with newly created T-Rex
boundary conditions respectively.
You can find detailed information about T-Rex boundary conditions in the following
sections: Boundary Conditions Tab (2D)
and Boundary Conditions Tab (3D).
Use the text entry fields in the T-Rex Boundary Conditions
frame to define the
default initial Δs, 2D T-Rex turning angle (Angle), or 2D T-Rex aspect ratio (Aspect
Ratio) to be used with newly created T-Rex boundary conditions of type Wall, Angle, Aspect
Ratio, and Max. Aspect Ratio
(2D T-Rex boundary conditions
and 3D T-Rex boundary conditions
The Size Field frame provides general size field default settings, as well as defaults for newly created source entities. Decay, Background Spacing
and Calculation are described in detail for the Size Field
tab of the unstructured block Solve command. Information on source Spacing and Decay can be found in the description for the
Use the Size Field frame to define the defaults to be used with newly created source entities.
Finally, at the bottom of the Defaults panel is the Reset Defaults command (shown above). Use this command to restore all default settings to those
applied for a new project.