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388 lines
12 KiB
C++
388 lines
12 KiB
C++
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | www.openfoam.com
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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Copyright (C) 2011-2016 OpenFOAM Foundation
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Copyright (C) 2017-2021 OpenCFD Ltd.
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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Namespace
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Foam::functionObjects
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Description
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Function objects are OpenFOAM utilities to ease workflow configurations and
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enhance workflows by producing additional user-requested data both during
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runtime and postprocessing calculations, typically in the form of
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additional logging to the screen, or generating text, image and field files.
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Function objects eliminate the need to store all runtime generated data,
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hence saving considerable resources. Furthermore, function objects are
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readily applied to batch-driven processes, improving reliability by
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standardising the sequence of operations and reducing the amount of manual
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interaction.
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In addition, the output of most function objects, e.g. output fields, are
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stored on the mesh database so that it can be retrieved and used for other
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applications (e.g. directly using \c wallShearStress function object output
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in \c fieldAverage function object to produce \c wallShearStressMean field).
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\section secFunctionObjects Using function objects
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Function objects can be executed by using two methods:
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- \c functions sub-dictionary in the \c system/controlDict file
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- \c postProcess command-line utility
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For the first method, each selected function object should be listed inside
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\c functions sub-dictionary of the \c system/controlDict file as a nested
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sub-dictionary, typically as in the following example:
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\verbatim
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functions // sub-dictionary name under the system/controlDict file
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{
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..optional entries..
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<dictName1>
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{
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// Mandatory entries
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type <functionObjectTypeName>;
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libs (<libType>FunctionObjects);
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// Mandatory entries defined in <functionObjectType>
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...
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// Optional entries defined in <functionObjectType>
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...
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// Optional (inherited) entries
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region region0;
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enabled true;
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log true;
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timeStart 0;
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timeEnd 1000;
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executeControl timeStep;
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executeInterval 1;
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writeControl timeStep;
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writeInterval 1;
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}
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<dictName2>
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{
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...
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}
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...
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<dictNameN>
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{
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...
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}
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}
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\endverbatim
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where the entries mean:
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\table
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Property | Description | Type | Reqd | Deflt
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type | Type name of function object | word | yes | -
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libs | Library name(s) for implementation | words | no | -
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errors | Error handling (default/warn/ignore/strict) | word | no | inherits
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region | Name of region for multi-region cases | word | no | region0
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enabled | Switch to turn function object on/off | bool | no | true
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log | Switch to write log info to standard output | bool | no | true
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timeStart | Start time for function object execution | scalar | no | 0
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timeEnd | End time for function object execution | scalar | no | inf
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executeControl | See time controls below | word | no | timeStep
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executeInterval | Steps/time between execute phases | label | no | 1
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writeControl | See time controls below | word | no | timeStep
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writeInterval | Steps/time between write phases | label | no | 1
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\endtable
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If the \c errors entry is missing, it uses the value (if any)
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specified within the top-level functionObjectList.
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Time controls:
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\table
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Option | Description
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none | Trigger is disabled
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timeStep | Trigger every 'Interval' time-steps
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writeTime | Trigger every 'Interval' output times
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runTime | Trigger every 'Interval' run time period
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adjustableRunTime | Currently identical to "runTime"
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clockTime | Trigger every 'Interval' clock time period
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cpuTime | Trigger every 'Interval' CPU time period
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onEnd | Trigger on end of simulation run
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\endtable
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The sub-dictionary name \c \<userDefinedSubDictName\> is chosen by the user,
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and is typically used as the name of the output directory for any data
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written by the function object.
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As the base mandatory entries, the \c type entry defines the type of
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function object properties that follow. Function objects are packaged into
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separate libraries for flexibility and the \c libs entry is used to specify
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which library should be loaded.
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Each function object has two separate run phases:
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- The \c execute phase is meant to be used for updating calculations
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or for management tasks.
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- The \c write phase is meant for writing the calculated data to disk.
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For each phase the respective time controls are provided, as listed above.
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The second method of executing function objects is to use \c postProcess
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utility.
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When specified without additional arguments, the \c postProcess utility
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executes all function objects defined in the \c system/controlDict file
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for all time directories:
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\verbatim
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postProcess
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\endverbatim
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Most function objects can be invoked directly without the need to specify
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the input dictionary using the \c -func option, e.g. to execute the Courant
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number function object:
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\verbatim
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postProcess -func CourantNo
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\endverbatim
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In addition, the \c -postProcess option is available to all solvers,
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and operates similarly to the stand-alone \c postProcess utility.
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For example, having completed a \c simpleFoam calculation, the following
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will execute all function objects defined in the \c system/controlDict file
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for all time directories:
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\verbatim
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simpleFoam -postProcess
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\endverbatim
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Class
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Foam::functionObject
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Description
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Abstract base-class for Time/database function objects.
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See also
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- Foam::functionObjectList
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- Foam::functionObjects::timeControl
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SourceFiles
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functionObject.C
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\*---------------------------------------------------------------------------*/
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#ifndef functionObject_H
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#define functionObject_H
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#include "typeInfo.H"
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#include "autoPtr.H"
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#include "runTimeSelectionTables.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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// Forward Declarations
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class Time;
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class polyMesh;
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class mapPolyMesh;
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/*---------------------------------------------------------------------------*\
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Class functionObject Declaration
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\*---------------------------------------------------------------------------*/
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class functionObject
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{
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// Private Data
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//- Name
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const word name_;
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//- Flag to indicate that names should be scoped
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bool scopedNames_;
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protected:
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// Protected Member Functions
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//- Return a scoped name, e.g. used to construct local field names
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word scopedName(const word& name) const;
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public:
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// Forward declarations
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class unavailableFunctionObject;
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//- Runtime type information
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virtual const word& type() const = 0;
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//- Flag to execute debug content
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static int debug;
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//- Global post-processing mode switch
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static bool postProcess;
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//- Directory prefix
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static word outputPrefix;
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//- Flag to write log into Info
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bool log;
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// Declare run-time constructor selection tables
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declareRunTimeSelectionTable
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(
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autoPtr,
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functionObject,
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dictionary,
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(const word& name, const Time& runTime, const dictionary& dict),
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(name, runTime, dict)
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);
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// Constructors
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//- Construct from components
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explicit functionObject
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(
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const word& name,
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const bool scopedNames = true
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);
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//- Return clone
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autoPtr<functionObject> clone() const
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{
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NotImplemented;
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return nullptr;
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}
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// Selectors
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//- Select from dictionary, based on its "type" entry
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static autoPtr<functionObject> New
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(
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const word& name,
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const Time& runTime,
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const dictionary& dict
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);
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//- Destructor
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virtual ~functionObject() = default;
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// Member Functions
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//- Return the name of this functionObject
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const word& name() const noexcept;
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//- Return the scoped names flag
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bool scopedNames() const noexcept;
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//- Read and set the function object if its data have changed
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virtual bool read(const dictionary& dict);
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//- Called at each ++ or += of the time-loop.
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// postProcess overrides the usual executeControl behaviour and
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// forces execution (used in post-processing mode)
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virtual bool execute() = 0;
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//- Execute using the specified subIndex.
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// The base implementation is a no-op.
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// \param subIndex an execution sub-index corresponding to a
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// sub-cycle or something similar.
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virtual bool execute(const label subIndex);
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//- Called at each ++ or += of the time-loop.
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// postProcess overrides the usual writeControl behaviour and
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// forces writing always (used in post-processing mode)
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virtual bool write() = 0;
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//- Called when Time::run() determines that the time-loop exits.
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// The base implementation is a no-op.
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virtual bool end();
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//- Called at the end of Time::adjustDeltaT() if adjustTime is true
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virtual bool adjustTimeStep();
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//- Did any file get changed during execution?
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virtual bool filesModified() const;
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//- Update for changes of mesh
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// The base implementation is a no-op.
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virtual void updateMesh(const mapPolyMesh& mpm);
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//- Update for changes of mesh
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// The base implementation is a no-op.
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virtual void movePoints(const polyMesh& mesh);
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};
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/*---------------------------------------------------------------------------*\
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Class functionObject::unavailableFunctionObject Declaration
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\*---------------------------------------------------------------------------*/
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//- Abstract functionObject to report when a real version is unavailable.
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class functionObject::unavailableFunctionObject
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:
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public functionObject
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{
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protected:
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//- Construct with name
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explicit unavailableFunctionObject(const word& name);
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//- Report it is unavailable, emitting a FatalError for try/catch
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//- in the caller
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void carp(std::string message = "") const;
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public:
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// Member Functions
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//- No nothing
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virtual bool execute();
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//- No nothing
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virtual bool write();
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};
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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} // End namespace Foam
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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#endif
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// ************************************************************************* //
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