Description🔗
The div
function object computes the divergence of an input field.
To execute div
function object on an input <field>
, a numerical scheme
should be defined for div(<field>)
in system/fvSchemes.divSchemes
.
Operands🔗
Operand | Type | Location |
---|---|---|
input | {surfaceScalar,volVector}Field | $FOAM_CASE/<time>/<inpField> |
output file | - | - |
output field | volScalarField | $FOAM_CASE/<time>/<outField> |
Usage🔗
Example of the div
function object
by using functions
sub-dictionary in system/controlDict
file:
div1
{
// Mandatory entries (unmodifiable)
type div;
libs (fieldFunctionObjects);
// Mandatory (inherited) entry (runtime modifiable)
field <field>;
// Optional (inherited) entries
result <fieldResult>;
region region0;
enabled true;
log true;
timeStart 0;
timeEnd 1000;
executeControl timeStep;
executeInterval 1;
writeControl timeStep;
writeInterval 1;
}
where the entries mean:
Property | Description | Type | Required | Default |
---|---|---|---|---|
type | Type name: div | word | yes | - |
libs | Library name: fieldFunctionObjects | word | yes | - |
field | Name of the operand field | word | yes | - |
The inherited entries are elaborated in:
Example by using the postProcess
utility:
postProcess -func "div(<field>)"
Further information🔗
Tutorial:
Source code:
API:
History:
- Introduced in version v1606+