Description

The vorticity function object computes the vorticity, the curl of the velocity.

\[ \vec \Omega = \nabla \times \u \]

where

$ \vec \Omega $	=	Vorticity vector [1/s]
$ \u $	=	Velocity [m/s]

Operands

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

Usage

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

vorticity1
{
    // Mandatory entries (unmodifiable)
    type        vorticity;
    libs        (fieldFunctionObjects);

    // Optional (inherited) entries
    field           <inpField>;
    result          <fieldResult>;
    region          region0;
    enabled         true;
    log             true;
    timeStart       0;
    timeEnd         1000;
    executeControl  timeStep;
    executeInterval 1;
    writeControl    timeStep;
    writeInterval   1;
}

where the entries mean: