inputValueMapper

Description

The inputValueMapper Function1 is a wrapper that maps the input value prior to it being used by another Function1

Usage

Example of the inputValueMapper Function1 to set the value of the entry myValue1

myValue
{
    type            inputValueMapper;
    mode            <mode-type>;
    value           <Function1>;
}

where the entries are described below:

Property	Description	Type	Required	Default
type	Type name: inputValueMapper	word	yes	-
mode	Mode type - see below	word	yes	-
value	Function1 type to supply the value	dictionary	yes	-

The <mode-type> can be set to:

• minMax : limit the value to within user-specified minimum and maximum values
• function : use the result of an additional Function1 as the input to the value Function1

Example showing minMax usage to limit the return value of a polynomial:

myValue
{
    type            inputValueMapper;
    mode            minMax;

    min             0.4;
    max             1.4;

    value polynomial
    (
        (5 1)
        (-2 2)
        (-2 3)
        (1 4)
    );
}

Here the return value will be:

• poly(0.4) for x <= 0.4;
• poly(1.4) for x >= 1.4; and
• poly(x) for 0.4 < x < 1.4.

Example showing function usage to supply a patch mass flux returned from a functionObjectValue Function1 to a table lookup:

myValue
{
    type            inputValueMapper;
    mode            function;

    function
    {
        type            functionObjectValue;
        functionObject  surfaceFieldValue1;
        functionObjectResult sum(outlet,phi);
    }

    value
    {
        type        table;
        file        "<system>/fanCurve.txt";
    }
}

Further information

Source code

• InputValueMapper

Tutorial

• simpleCar
• propeller

API:

• Foam::Function1Types::InputValueMapper

History: Introduced in version v2112