# 7.24. Element Death

This section is referenced in the following other sections

- Simulation Setup: Element Death

## 7.24.1. Element Death

Scope

  Aria Region

Summary

  Allows the specification of an element death criterion to one or more element volumes. The group of element volumes plus a death criterion make up a “death instance”.

    begin Element Death Death Name

       Add Volume Block Name...

       Criterion {=} {avg nodal value of | death criterion type undefined | element value of | max nodal value of | min nodal value of} Variable Name {< | <= | = | > | >= | death criterion compare type undefined} Threshold Value

    end Element Death Death Name

### 7.24.1.1. Line Commands

###### Add Volume

Syntax

  Add Volume Block Name…

Summary

  Specifies the names identifying an element volume to which an element death criterion is to be applied. Line can be repeated as needed to add multiple volumes. A group of element volumes plus a death criterion make up a “death instance”.

Parameter | Value | Default
--- | --- | ---
Block Name | string… | –

###### Criterion

Syntax

  Criterion {=} {avg nodal value of | death criterion type undefined | element value of | max nodal value of | min nodal value of} Variable Name {< | <= | = | > | >= | death criterion compare type undefined} Threshold Value

Summary

  The death criterion for one or more element volumes. Currently designed to support the specification of a threshold for a scalar variable defined on either a node or element. For nodal variables, various operations such as Min., Max. and Avg. are provided to reduce the nodal values to a single element value. For an element variable no operations are given as there is only one value per element. A group of element volumes plus a death criterion make up a “death instance”. Currently only one criterion is allowed per death instance.

Parameter | Value | Default
--- | --- | ---
{=} | {= | are | is} | –
DeathCriterionType | {avg nodal value of | death criterion type undefined | element value of | max nodal value of | min nodal value of} | –
Variable Name | string | –
DeathCriterionCompareType | {< | <= | = | > | >= | death criterion compare type undefined} | –
Threshold Value | real | –

## 7.24.2. Cdfem Death

Scope

  Aria Region

Summary

  Allows the specification of an element death criterion to one or more element volumes. The group of element volumes plus a death criterion make up a “death instance”.

    begin Cdfem Death Death Name

       Add Volume Block Name...

       Criterion {=} Variable Name {< | > | cdfem inequality criterion undefined} Threshold Value

    end Cdfem Death Death Name

### 7.24.2.1. Line Commands

###### Add Volume

Syntax

  Add Volume Block Name…

Summary

  Specifies the names identifying an element volume to which an element death criterion is to be applied. Line can be repeated as needed to add multiple volumes. A group of element volumes plus a death criterion make up a “death instance”.

Parameter | Value | Default
--- | --- | ---
Block Name | string… | –

###### Criterion

Syntax

  Criterion {=} Variable Name {< | > | cdfem inequality criterion undefined} Threshold Value

Summary

  The death criterion for one or more element volumes. A group of element volumes plus a death criterion make up a “death instance”. Currently only one criterion is allowed per death instance.

Parameter | Value | Default
--- | --- | ---
{=} | {= | are | is} | –
Variable Name | string | –
CDFEMInequalityCriterion | {< | > | cdfem inequality criterion undefined} | –
Threshold Value | real | –

## 7.24.3. Transfer Element Death

Syntax

  Transfer Element Death

Summary

  Cause execution of element death to occur at beginning of a time step rather than at the end of the step.