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Level Set Subgrid Integration Depth
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::
Level Set Subgrid Integration Depth =
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Description / Usage
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Subgrid integration is used to improve integration accuracy for all functions which
invoke a diffuse level-set interface representation of properties and surfaces. With
integration depths greater than zero the elements through which the zero level set
crosses are subdivided in a geometric way to achieve more accurate integration. Level-
1 depths implies the smallest grid size is 1/4 of the original, and a level-2 is 1/8th, and
so on. Please see usage nodes below.
Level of integration depth. Default is zero. See usage notes.
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Examples
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This example sets the subgrid integration depth to two:
::
Level Set Subgrid Integration Depth = 2
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Technical Discussion
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Each level of subgrid integration leads to precipitous growth in computational
load, especially in 3D. Level-2 seems to optimize accuracy and efficiency.
Levels higher than 2 is not recommended.
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**References**
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GT-020.1: Tutorial on Level Set Interface Tracking in GOMA, February 27, 2001, T.A.
Baer