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GridTool Documentation
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GridTool: A Tool for Structured and Unstructured Grid Generation

Background Grid

This panel contains several buttons and input-fields, and they are used to create/modify/delete nodal and linear sources. In order to define grid spacing, nodal and linear sources must be created and placed in the right locations. In order to create a source, the "Bg Grid" and "Points/Curves" panels must be activated. To create a source, press the "Next Source" button. This will create a source similar to the last source. If this is the first source, it will create a nodal source and place it in the middle of the domain. The location of a source can be moved by using the same techniques as described for moving points. The value spacings, "S1" and "S2", are the sizes of ideal tetrahedrals for the source locations. An excellent description of parameters "a_n, b_n, alpha" can be found in Ref. 10.

Image of the Background Grid Panel

FAQ

How do I create a source?
Press Next Source button. This will create a source similar to the last source. If this is the first source, it will create a nodal source and place it in the middle of the domain. The location of a source can be moved by using the same techniques as described for moving points. The value spacings, "S1" and "S2", are the sizes of ideal tetrahedrals for the source locations. An excellent description of parameters "a_n, b_n, alpha" can be found in Ref. 10.
How do I make a source active? How do I make an end point of a linear source active?
Either place the cursor over the end points of the source, and press the B hotkey, or use Source Number input-field.
How do I delete a source?
Make the source active and hit the Delete Source button
How do I change a nodal source to linear and vs?
Make the source active and hit the Nodal Source button
How do I move a source location?
  1. Active Backgound Grids Panel
  2. Move the cursor over the source location and press "B" hotkey
  3. Change the value in the Points/Curves panel
  4. For linear sources, repeat above two steps for the other end.
How do I change the properties of a source?
Make the source active and enter the value in the Background Grids Panel
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Last Updated: Sep 17, 2002