/ADMESH/GLOBAL
Block Format Keyword Defines the global parameters for adaptive meshing. This keyword is not available for SPMD computation.
Format
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
---|---|---|---|---|---|---|---|---|---|
/ADMESH/GLOBAL | |||||||||
Levelmax | ladmrule | Time delay | Idt |
Definition
Field | Contents | SI Unit Example |
---|---|---|
Levelmax | Maximum
level (Integer) |
|
ladmrule | Enforcement flag for rule
2 to 1. 2
(Integer) |
|
Time delay | Time interval between 2
checks for adaptive meshing using angle or thickness error
criteria. (Real) |
|
Idt | Time step flag based on
the coarse mesh. 5
6
(Integer) |
Comments
- The maximum
level Levelmax of subdivisions of an element is the same overall
the parts which will be declared adaptive in
/ADMESH/SET.
Elements of the original mesh correspond to level 0 ones.
- If
Iadmrule is set to 1, the adaptive re-meshing process ensures
that the difference in level between two neighboring elements within the parts that
are declared adaptive, will not exceed 1.
Otherwise, the difference in level between two neighboring elements is not controlled and may be greater.
- The time delay field defines the time interval between two checks (using angle or thickness error criteria in /ADMESH/SET) performed for adaptive meshing. For details on these criteria, refer to /ADMESH/SET.
- In case of a multi-stage analysis that uses state files to restore the state of adapted parts, this keyword is compulsory for adapting these parts; the values for Iadmrule and Time delay may be changed in each stage, but the value of Levelmax must be the same as that of the previous stage.
- If Idt is set to 1, the cycle time step will be based on the coarse mesh and not on the current refined mesh, therefore will be larger. So the results may be less accurate.
- In Adaptive Meshing, node ID and shell ID are limited to < 900000000.