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
.
Operand | Type | Location |
---|---|---|
input | {surfaceScalar,volVector}Field | $FOAM_CASE/<time>/<inpField> |
output file | - | - |
output field | volScalarField | $FOAM_CASE/<time>/<outField> |
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>)"
Tutorial:
Source code:
History