Curle Class Reference

Computes the acoustic pressure based on Curle's analogy. More...

Inheritance diagram for Curle:
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Collaboration diagram for Curle:
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Public Member Functions

 TypeName ("Curle")
 Runtime type information. More...
 
 Curle (const word &name, const Time &runTime, const dictionary &dict)
 Construct from Time and dictionary. More...
 
 Curle (const Curle &)=delete
 No copy construct. More...
 
void operator= (const Curle &)=delete
 No copy assignment. More...
 
virtual ~Curle ()=default
 Destructor. More...
 
virtual bool read (const dictionary &)
 Read the Curle data. More...
 
virtual bool execute ()
 Called at each ++ or += of the time-loop. More...
 
virtual bool write ()
 Called at each ++ or += of the time-loop. More...
 
- Public Member Functions inherited from fvMeshFunctionObject
 TypeName ("fvMeshFunctionObject")
 Runtime type information. More...
 
 fvMeshFunctionObject (const word &name, const Time &runTime, const dictionary &dict)
 Construct from Time and dictionary. More...
 
 fvMeshFunctionObject (const word &name, const objectRegistry &obr, const dictionary &dict)
 Construct from the region objectRegistry and dictionary. More...
 
virtual ~fvMeshFunctionObject ()=default
 Destructor. More...
 
- Public Member Functions inherited from regionFunctionObject
 TypeName ("regionFunctionObject")
 Runtime type information. More...
 
 regionFunctionObject (const word &name, const Time &runTime, const dictionary &dict)
 Construct from Time and dictionary. More...
 
 regionFunctionObject (const word &name, const objectRegistry &obr, const dictionary &dict)
 Construct from the region objectRegistry and dictionary. More...
 
virtual ~regionFunctionObject ()=default
 Destructor. More...
 
template<class ObjectType >
const ObjectType * lookupObjectPtr (const word &fieldName) const
 Deprecated(2018-10) More...
 
template<class ObjectType >
ObjectType * lookupObjectRefPtr (const word &fieldName) const
 Deprecated(2018-10) More...
 
- Public Member Functions inherited from stateFunctionObject
 stateFunctionObject (const word &name, const Time &runTime)
 Construct from components. More...
 
virtual ~stateFunctionObject ()=default
 Destructor. More...
 
dictionarypropertyDict ()
 Return access to the property dictionary. More...
 
bool foundProperty (const word &entryName) const
 Return true if the property exists. More...
 
void clearTrigger ()
 Remove the trigger index from the properties. More...
 
label getTrigger () const
 Get the current trigger index. More...
 
bool setTrigger (const label triggeri, bool increaseOnly=true)
 Set the trigger index. Normally only if greater than current. More...
 
bool getDict (const word &entryName, dictionary &dict) const
 Set dictionary, return true if set. More...
 
bool getObjectDict (const word &objectName, const word &entryName, dictionary &dict) const
 Set dictionary from named object, return true if set. More...
 
template<class Type >
Type getProperty (const word &entryName, const Type &defaultValue=Type(Zero)) const
 Retrieve generic property. More...
 
template<class Type >
bool getProperty (const word &entryName, Type &value) const
 Set generic property, return true if set. More...
 
template<class Type >
void setProperty (const word &entryName, const Type &value)
 Add generic property. More...
 
template<class Type >
Type getObjectProperty (const word &objectName, const word &entryName, const Type &defaultValue=Type(Zero)) const
 Retrieve generic property from named object. More...
 
template<class Type >
bool getObjectProperty (const word &objectName, const word &entryName, Type &value) const
 Set generic property from named object, return true if set. More...
 
template<class Type >
void setObjectProperty (const word &objectName, const word &entryName, const Type &value)
 Add generic property from named object. More...
 
template<class Type >
void setResult (const word &entryName, const Type &value)
 Add result. More...
 
template<class Type >
void setObjectResult (const word &objectName, const word &entryName, const Type &value)
 Add result from named object. More...
 
template<class Type >
Type getResult (const word &entryName, const Type &defaultValue=Type(Zero)) const
 Retrieve result. More...
 
template<class Type >
Type getObjectResult (const word &objectName, const word &entryName, const Type &defaultValue=Type(Zero)) const
 Retrieve result from named object. More...
 
template<class Type >
bool getObjectResult (const word &objectName, const word &entryName, Type &value) const
 Set result from named object, return true if set. More...
 
word resultType (const word &entryName) const
 Retrieve the result type. More...
 
word objectResultType (const word &objectName, const word &entryName) const
 Return the type of result. More...
 
wordList objectResultEntries () const
 Retrieve the result entries. More...
 
wordList objectResultEntries (const word &objectName) const
 Return result entries for named object. More...
 
void writeResultEntries (Ostream &os) const
 Write the results entries for all objects to stream. More...
 
void writeResultEntries (const word &objectName, Ostream &os) const
 Write the results entries for named object to stream. More...
 
void writeAllResultEntries (Ostream &os) const
 Write the results entries for all objects to stream. More...
 
- Public Member Functions inherited from timeFunctionObject
 timeFunctionObject (const word &name, const Time &runTime)
 Construct from Time. More...
 
virtual ~timeFunctionObject ()=default
 Destructor. More...
 
const Timetime () const
 Return time database. More...
 
objectRegistrystoredObjects ()
 
const objectRegistrystoredObjects () const
 
- Public Member Functions inherited from functionObject
 declareRunTimeSelectionTable (autoPtr, functionObject, dictionary,(const word &name, const Time &runTime, const dictionary &dict),(name, runTime, dict))
 
 functionObject (const word &name, const bool withNamePrefix=defaultUseNamePrefix)
 Construct from components. More...
 
autoPtr< functionObjectclone () const
 Return clone. More...
 
virtual ~functionObject ()=default
 Destructor. More...
 
virtual const wordtype () const =0
 Runtime type information. More...
 
const wordname () const noexcept
 Return the name of this functionObject. More...
 
bool useNamePrefix () const noexcept
 Return the flag for adding a scoping name prefix. More...
 
bool useNamePrefix (bool on) noexcept
 Modify the flag for adding a scoping name prefix. More...
 
virtual bool execute (const label subIndex)
 Execute using the specified subIndex. More...
 
virtual bool end ()
 Called when Time::run() determines that the time-loop exits. More...
 
virtual bool adjustTimeStep ()
 Called at the end of Time::adjustDeltaT() if adjustTime is true. More...
 
virtual bool filesModified () const
 Did any file get changed during execution? More...
 
virtual void updateMesh (const mapPolyMesh &mpm)
 Update for changes of mesh. More...
 
virtual void movePoints (const polyMesh &mesh)
 Update for changes of mesh. More...
 
- Public Member Functions inherited from writeFile
 writeFile (const objectRegistry &obr, const fileName &prefix, const word &name="undefined", const bool writeToFile=true)
 Construct from objectRegistry, prefix, fileName. More...
 
 writeFile (const objectRegistry &obr, const fileName &prefix, const word &name, const dictionary &dict, const bool writeToFile=true)
 
 writeFile (const writeFile &wf)
 Construct copy. More...
 
virtual ~writeFile ()=default
 Destructor. More...
 
virtual OFstreamfile ()
 Return access to the file (if only 1) More...
 
virtual bool writeToFile () const
 Flag to allow writing to file. More...
 
virtual bool canWriteHeader () const
 Flag to allow writing the header. More...
 
virtual label charWidth () const
 Return width of character stream output. More...
 
virtual void writeCommented (Ostream &os, const string &str) const
 Write a commented string to stream. More...
 
virtual void writeTabbed (Ostream &os, const string &str) const
 Write a tabbed string to stream. More...
 
virtual void writeHeader (Ostream &os, const string &str) const
 Write a commented header to stream. More...
 
virtual void writeCurrentTime (Ostream &os) const
 Write the current time to stream. More...
 
virtual void writeBreak (Ostream &os) const
 Write a break marker to the stream. More...
 
template<class Type >
void writeHeaderValue (Ostream &os, const string &property, const Type &value) const
 Write a (commented) header property and value pair. More...
 

Additional Inherited Members

- Static Public Member Functions inherited from functionObject
static autoPtr< functionObjectNew (const word &name, const Time &runTime, const dictionary &dict)
 Select from dictionary, based on its "type" entry. More...
 
- Public Attributes inherited from functionObject
bool log
 Flag to write log into Info. More...
 
- Static Public Attributes inherited from functionObject
static int debug
 Flag to execute debug content. More...
 
static bool postProcess
 Global post-processing mode switch. More...
 
static bool defaultUseNamePrefix
 Global default for useNamePrefix. More...
 
static word outputPrefix
 Directory prefix. More...
 
- Static Public Attributes inherited from writeFile
static label addChars = 8
 Additional characters for writing. More...
 
- Protected Member Functions inherited from fvMeshFunctionObject
 fvMeshFunctionObject (const fvMeshFunctionObject &)=delete
 No copy construct. More...
 
void operator= (const fvMeshFunctionObject &)=delete
 No copy assignment. More...
 
- Protected Member Functions inherited from regionFunctionObject
virtual const objectRegistryobr () const
 The region or sub-region registry being used. More...
 
template<class ObjectType >
bool foundObject (const word &fieldName) const
 Find object (eg, a field) in the (sub) objectRegistry. More...
 
template<class ObjectType >
const ObjectType * cfindObject (const word &fieldName) const
 
template<class ObjectType >
const ObjectType * findObject (const word &fieldName) const
 
template<class ObjectType >
ObjectType * findObject (const word &fieldName)
 
template<class ObjectType >
ObjectType * getObjectPtr (const word &fieldName) const
 
template<class ObjectType >
const ObjectType & lookupObject (const word &fieldName) const
 Lookup and return object (eg, a field) from the (sub) objectRegistry. More...
 
template<class ObjectType >
ObjectType & lookupObjectRef (const word &fieldName) const
 Lookup and return object (eg, a field) from the (sub) objectRegistry. More...
 
template<class ObjectType >
bool store (word &fieldName, const tmp< ObjectType > &tfield, bool cacheable=false)
 Store the field in the (sub) objectRegistry under the given name. More...
 
template<class ObjectType >
bool storeInDb (const word &fieldName, const tmp< ObjectType > &tfield, const objectRegistry &obr)
 Store the field in an optional objectRegistry under the given name. More...
 
bool writeObject (const word &fieldName)
 Write field if present in the (sub) objectRegistry. More...
 
bool clearObject (const word &fieldName)
 Clear field from the (sub) objectRegistry if present. More...
 
void clearObjects (const wordList &objNames)
 Clear fields from the (sub) objectRegistry if present. More...
 
 regionFunctionObject (const regionFunctionObject &)=delete
 No copy construct. More...
 
void operator= (const regionFunctionObject &)=delete
 No copy assignment. More...
 
- Protected Member Functions inherited from stateFunctionObject
const functionObjects::propertiesstateDict () const
 Return a const reference to the state dictionary. More...
 
functionObjects::propertiesstateDict ()
 Return non-const access to the state dictionary. More...
 
 stateFunctionObject (const stateFunctionObject &)=delete
 No copy construct. More...
 
void operator= (const stateFunctionObject &)=delete
 No copy assignment. More...
 
- Protected Member Functions inherited from timeFunctionObject
void clearOutputObjects (const wordList &objNames)
 Remove specified items from "functionObjectObjects". More...
 
 timeFunctionObject (const timeFunctionObject &)=delete
 No copy construct. More...
 
void operator= (const timeFunctionObject &)=delete
 No copy assignment. More...
 
- Protected Member Functions inherited from functionObject
word scopedName (const word &name) const
 Return a scoped (prefixed) name. More...
 
- Protected Member Functions inherited from writeFile
void initStream (Ostream &os) const
 Initialise the output stream for writing. More...
 
fileName baseFileDir () const
 Return the base directory for output. More...
 
fileName baseTimeDir () const
 Return the base directory for the current time value. More...
 
virtual autoPtr< OFstreamcreateFile (const word &name, scalar timeValue) const
 Return autoPtr to a new file for a given time. More...
 
virtual autoPtr< OFstreamcreateFile (const word &name) const
 Return autoPtr to a new file using the simulation start time. More...
 
virtual void resetFile (const word &name)
 Reset internal file pointer to new file with new name. More...
 
Omanip< int > valueWidth (const label offset=0) const
 Return the value width when writing to stream with optional offset. More...
 
void operator= (const writeFile &)=delete
 No copy assignment. More...
 
- Protected Attributes inherited from fvMeshFunctionObject
const fvMeshmesh_
 Reference to the fvMesh. More...
 
- Protected Attributes inherited from regionFunctionObject
word subRegistryName_
 Name for alternative object registry. More...
 
const objectRegistryobr_
 Reference to the region objectRegistry. More...
 
const objectRegistryobrPtr_
 Pointer to alternative (eg, sub-region) objectRegistry. More...
 
- Protected Attributes inherited from timeFunctionObject
const Timetime_
 Reference to the time database. More...
 
- Protected Attributes inherited from writeFile
const objectRegistryfileObr_
 Reference to the region objectRegistry. More...
 
const fileName prefix_
 Prefix. More...
 
word fileName_
 Name of file. More...
 
autoPtr< OFstreamfilePtr_
 File pointer. More...
 
label writePrecision_
 Write precision. More...
 
bool writeToFile_
 Flag to enable/disable writing to file. More...
 
bool updateHeader_
 
bool writtenHeader_
 Flag to identify whether the header has been written. More...
 
bool useUserTime_
 
scalar startTime_
 Start time value. More...
 

Detailed Description

Computes the acoustic pressure based on Curle's analogy.

Curle's analogy is implemented as:

\[ p' = \frac{1}{4 \pi} \frac{\vec{r}}{| \vec{r} | ^2} \cdot \left( \frac{\vec{F}}{| \vec{r} |} + \frac{1}{c_0}\frac{d(\vec{F})}{d(t)} \right) \]

where

\( p' \) = Curle's acoustic pressure [Pa] or [Pa (m3/kg)]
\( c_0 \) = Reference speed of sound [m/s]
\( \vec{r} \) = Distance vector to observer locations [m]
\( \vec{F} \) = Force [N] or [N (m3/kg)]
\( t \) = time [s]

Operands:

Operand Type Location
input volScalarField $FOAM_CASE/<time>/<inpField>
output file - -
output field volScalarField $FOAM_CASE/<time>/<outField>
Note
Only the normal-pressure force is included in the force calculation.
Usage
Minimal example by using system/controlDict.functions:
Curle1
{
    type            Curle;
    libs            ("libfieldFunctionObjects.so");
    ...
    patches         (surface1 surface2);
    c0              330;


    // Input - either points or surface

    input           points;
    observerPositions ((0 0 0)(1 0 0));

    //input           surface;
    //surface         "inputSurface.obj"


    // Output - either points or surface
    output          points;

    //output          surface;
    //surfaceType     ensight;
}

where the entries mean:

Property Description Type Req'd Dflt
type Type name: Curle word yes -
libs Library name: fieldFunctionObjects word yes -
p Pressure field name word no p
patches Sound generation patch names wordList yes -
c0 Reference speed of sound scalar yes -
input Input type word yes -
observerPositions List of observer positions (x y z) pointList no -
surface Input surface file name word no -
output Output type word yes -
surfaceType Output surface type word no -

The inherited entries are elaborated in:

Usage by the postProcess utility is not available.

See also
Source files

Definition at line 248 of file Curle.H.

Constructor & Destructor Documentation

◆ Curle() [1/2]

Curle ( const word name,
const Time runTime,
const dictionary dict 
)

Construct from Time and dictionary.

Definition at line 57 of file Curle.C.

References dict, and Foam::read().

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◆ Curle() [2/2]

Curle ( const Curle )
delete

No copy construct.

◆ ~Curle()

virtual ~Curle ( )
virtualdefault

Destructor.

Member Function Documentation

◆ TypeName()

TypeName ( "Curle"  )

Runtime type information.

◆ operator=()

void operator= ( const Curle )
delete

No copy assignment.

◆ read()

bool read ( const dictionary dict)
virtual

Read the Curle data.

Reimplemented from writeFile.

Definition at line 79 of file Curle.C.

References Foam::abort(), dict, Foam::endl(), string::expand(), Foam::FatalError, FatalErrorInFunction, Foam::FatalIOError, FatalIOErrorInFunction, forAll, Foam::name(), surfaceWriter::New(), os(), Foam::blockMeshTools::read(), and WarningInFunction.

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◆ execute()

bool execute ( )
virtual

Called at each ++ or += of the time-loop.

postProcess overrides the usual executeControl behaviour and forces execution (used in post-processing mode)

Implements functionObject.

Definition at line 191 of file Curle.C.

References Foam::fvc::ddt(), dpdt, Foam::endl(), forAll, Pstream::listCombineGather(), Pstream::listCombineScatter(), Foam::mag(), UPstream::master(), Foam::name(), os(), p, Foam::constant::mathematical::pi(), Foam::sqr(), and Foam::sum().

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◆ write()

bool write ( )
virtual

Called at each ++ or += of the time-loop.

postProcess overrides the usual writeControl behaviour and forces writing always (used in post-processing mode)

Implements functionObject.

Definition at line 267 of file Curle.C.


The documentation for this class was generated from the following files: