nearWallFields

Table of Contents

• Description
  • Operands
• Usage
• Further information

Description

The nearWallFields function object samples near-patch volume fields within an input distance range.

Operands

Operand	Type	Location
input	vol<Type>Field	$FOAM_CASE/<time>/<inpField>
output file	-	-
output field	vol<Type>Field	$FOAM_CASE/<time>/<outField>

where <Type>=Scalar/Vector/SphericalTensor/SymmTensor/Tensor.

Usage

Example of the nearWallFields function object by using functions sub-dictionary in system/controlDict file:

nearWallFields1
{
    // Mandatory entries (unmodifiable)
    type            nearWallFields;
    libs            (fieldFunctionObjects);
    fields
    (
        (<field1> <outField1>)
        (<field2> <outField2>)
    );
    patches         (<patch1> <patch2> ... <patchN>);
    distance        0.01;

    // Optional (inherited) entries
    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: nearWallFields	word	yes	-
libs	Library name: fieldFunctionObjects	word	yes	-
fields	Names of input-output fields	wordHashTable	yes	-
patches	Names of patches to sample	wordList	yes	-
distance	Wall-normal distance from patch to sample	scalar	yes	-

The inherited entries are elaborated in:

• functionObject

Usage by the postProcess utility is not available.

Further information

Tutorial:

• $FOAM_TUTORIALS/incompressible/pisoFoam/RAS/cavity

Source code:

• Foam::functionObjects::nearWallFields

History

• Introduced in version v1606+