/KILL
Engine Keyword The Engine is stopped if one of the following criteria is exceeded.
Format
/KILL
Emax NTH NANIM NERR_POSIT
Definitions
Field | Content | SI Unit Example |
---|---|---|
Emax | Energy error ratio.
Defined as the ratio of the current simulation energy to the total
energy in the system. Unlike the energy error listed in the engine
output file, this value can be greater than 0.999 (99.9%). Default = 1030 |
|
Total mass ratio criteria
is defined as the total added mass at a given time divided by the
initial total mass. Default = 1030 |
||
Nodal mass ratio criteria
is defined for each node as its mass divided by its initial mass.
The computation is stopped, if at least one node meets the
criteria. Default = 1030 |
||
NTH |
|
|
NANIM |
|
|
NERR_POSIT |
|
Comments
- To find the divergence of the Engine run, it is better to only check for the positive energy error and not the negative energy error. To find early divergence, it is recommended to use NERR_POSIT = 1, NTH = 1, NANIM = 1, and a relatively low value for Emax.
- The total mass criteria is defined as the ratio of total added mass at a given time divided by the initial total mass.
- The nodal mass ratio criteria is defined for each node as the ratio of its mass divided by its initial mass. The computation is stopped, if at least one node meets the criteria.
- No restart file is written if the Engine is stopped due to one of these events (to write a Restart file, use /STOP).