FFT of the pressure field. More...
Public Member Functions | |
| noiseFFT (const scalar deltat, const scalarField &pressure) | |
| Construct from pressure field. More... | |
| noiseFFT (Istream &) | |
| Construct from Istream. More... | |
| noiseFFT (const fileName &pFileName, const label skip=0) | |
| Construct from pressure field file name. More... | |
| Pair< scalarField > | pt () const |
| Return p(t) More... | |
| tmp< scalarField > | window (const label N, const label n) const |
| Return the nth window. More... | |
| tmp< scalarField > | Hanning (const label N) const |
| Return the Hanning window function. More... | |
| tmp< scalarField > | Pf (const tmp< scalarField > &pn) const |
| Return the fft of the given pressure data. More... | |
| Pair< scalarField > | meanPf (const label N, const label nw) const |
| Return the multi-window mean fft of the complete pressure data. More... | |
| Pair< scalarField > | RMSmeanPf (const label N, const label nw) const |
| Return the multi-window RMS mean fft of the complete pressure data. More... | |
| Pair< scalarField > | Lf (const Pair< scalarField > &gPf) const |
| Return the narrow-band PFL (pressure-fluctuation level) spectrum. More... | |
| Pair< scalarField > | Ldelta (const Pair< scalarField > &gLf, const scalar f1, const scalar fU) const |
| Return the one-third-octave-band PFL spectrum. More... | |
| Pair< scalarField > | Pdelta (const Pair< scalarField > &gLf, const scalar f1, const scalar fU) const |
| Return the one-third-octave-band pressure spectrum. More... | |
| scalar | Lsum (const Pair< scalarField > &gLf) const |
| Return the total PFL as the sum of Lf over all frequencies. More... | |
| scalar | dbToPa (const scalar db) const |
| Convert the db into Pa. More... | |
| tmp< scalarField > | dbToPa (const tmp< scalarField > &db) const |
| Convert the db-field into Pa. More... | |
 Public Member Functions inherited from Field< scalar > | |
| Field () | |
| Construct null. More... | |
| Field (const label) | |
| Construct given size. More... | |
| Field (const label, const scalar &) | |
| Construct given size and initial value. More... | |
| Field (const label, const zero) | |
| Construct given size and initialised to zero. More... | |
| Field (const UList< scalar > &) | |
| Copy constructor of a UList<Type> More... | |
| Field (List< scalar > &&) | |
| Mover constructor transferring the List contents. More... | |
| Field (const UIndirectList< scalar > &) | |
| Copy constructor of a UIndirectList<Type> More... | |
| Field (const Field< scalar > &) | |
| Copy constructor. More... | |
| Field (Field< scalar > &, bool reuse) | |
| Copy constructor or re-use as specified. More... | |
| Field (Field< scalar > &&) | |
| Move constructor transferring the Field contents. More... | |
| Field (const tmp< Field< scalar >> &) | |
| Copy constructor of tmp<Field> More... | |
| Field (const UList< scalar > &mapF, const labelUList &mapAddressing) | |
| Construct by 1 to 1 mapping from the given field. More... | |
| Field (const tmp< Field< scalar >> &tmapF, const labelUList &mapAddressing) | |
| Construct by 1 to 1 mapping from the given tmp field. More... | |
| Field (const UList< scalar > &mapF, const labelListList &mapAddressing, const scalarListList &weights) | |
| Construct by interpolative mapping from the given field. More... | |
| Field (const tmp< Field< scalar >> &tmapF, const labelListList &mapAddressing, const scalarListList &weights) | |
| Construct by interpolative mapping from the given tmp field. More... | |
| Field (Istream &) | |
| Construct from Istream. More... | |
| Field (const word &keyword, const dictionary &, const label size) | |
| Construct from a dictionary entry. More... | |
| tmp< Field< scalar > > | clone () const |
| Clone. More... | |
| void | map (const UList< scalar > &mapF, const labelUList &mapAddressing) |
| 1 to 1 map from the given field More... | |
| void | map (const tmp< Field< scalar >> &tmapF, const labelUList &mapAddressing) |
| 1 to 1 map from the given tmp field More... | |
| void | map (const UList< scalar > &mapF, const labelListList &mapAddressing, const scalarListList &weights) |
| Interpolative map from the given field. More... | |
| void | map (const tmp< Field< scalar >> &tmapF, const labelListList &mapAddressing, const scalarListList &weights) |
| Interpolative map from the given tmp field. More... | |
| void | rmap (const UList< scalar > &mapF, const labelUList &mapAddressing) |
| 1 to 1 reverse-map from the given field More... | |
| void | rmap (const tmp< Field< scalar >> &tmapF, const labelUList &mapAddressing) |
| 1 to 1 reverse-map from the given tmp field More... | |
| void | rmap (const UList< scalar > &mapF, const labelUList &mapAddressing, const UList< scalar > &weights) |
| Interpolative reverse map from the given field. More... | |
| void | rmap (const tmp< Field< scalar >> &tmapF, const labelUList &mapAddressing, const UList< scalar > &weights) |
| Interpolative reverse map from the given tmp field. More... | |
| void | reset (const Field< scalar > &) |
| Reset the field values to the given field. More... | |
| void | negate () |
| Negate this field. More... | |
| tmp< Field< cmptType > > | component (const direction) const |
| Return a component field of the field. More... | |
| void | replace (const direction, const UList< cmptType > &) |
| Replace a component field of the field. More... | |
| void | replace (const direction, const tmp< Field< cmptType >> &) |
| Replace a component field of the field. More... | |
| void | replace (const direction, const cmptType &) |
| Replace a component field of the field. More... | |
| VSForm | block (const label start) const |
| tmp< Field< scalar > > | T () const |
| Return the field transpose (only defined for second rank tensors) More... | |
| void | operator= (const Field< scalar > &) |
| void | operator= (Field< scalar > &&) |
| void | operator= (const UList< scalar > &) |
| void | operator= (List< scalar > &&) |
| void | operator= (const SubField< scalar > &) |
| void | operator= (const tmp< Field< scalar >> &) |
| void | operator= (const scalar &) |
| void | operator= (const zero) |
| void | operator= (const VectorSpace< Form, Cmpt, nCmpt > &) |
| void | operator= (const tmp< Field > &rhs) |
| void | operator+= (const UList< scalar > &) |
| void | operator+= (const tmp< Field< scalar >> &) |
| void | operator+= (const scalar &) |
| void | operator-= (const UList< scalar > &) |
| void | operator-= (const tmp< Field< scalar >> &) |
| void | operator-= (const scalar &) |
| void | operator*= (const UList< scalar > &) |
| void | operator*= (const tmp< Field< scalar >> &) |
| void | operator*= (const scalar &) |
| void | operator/= (const UList< scalar > &) |
| void | operator/= (const tmp< Field< scalar >> &) |
| void | operator/= (const scalar &) |
| Public Member Functions inherited from refCount | |
| int | count () const |
| Return the current reference count. More... | |
| bool | unique () const |
| Return true if the reference count is zero. More... | |
| void | operator++ () |
| Increment the reference count. More... | |
| void | operator++ (int) |
| Increment the reference count. More... | |
| void | operator-- () |
| Decrement the reference count. More... | |
| void | operator-- (int) |
| Decrement the reference count. More... | |
| Public Member Functions inherited from List< scalar > | |
| List () | |
| Null constructor. More... | |
| List (const label) | |
| Construct with given size. More... | |
| List (const label, const scalar &) | |
| Construct with given size and value for all elements. More... | |
| List (const label, const zero) | |
| Construct with given size initialising all elements to zero. More... | |
| List (const List< scalar > &) | |
| Copy constructor. More... | |
| List (const UList< T2 > &) | |
| Copy constructor from list containing another type. More... | |
| List (List< scalar > &&) | |
| Move constructor. More... | |
| List (List< scalar > &, bool reuse) | |
| Construct as copy or re-use as specified. More... | |
| List (const UList< scalar > &, const labelUList &mapAddressing) | |
| Construct as subset. More... | |
| List (InputIterator first, InputIterator last) | |
| Construct given start and end iterators. More... | |
| List (const FixedList< scalar, Size > &) | |
| Construct as copy of FixedList<T, Size> More... | |
| List (const PtrList< scalar > &) | |
| Construct as copy of PtrList<T> More... | |
| List (const SLList< scalar > &) | |
| Construct as copy of SLList<T> More... | |
| List (const UIndirectList< scalar > &) | |
| Construct as copy of UIndirectList<T> More... | |
| List (const BiIndirectList< scalar > &) | |
| Construct as copy of BiIndirectList<T> More... | |
| List (std::initializer_list< scalar >) | |
| Construct from an initialiser list. More... | |
| List (Istream &) | |
| Construct from Istream. More... | |
| label | size () const |
| Return the number of elements in the UList. More... | |
| autoPtr< List< scalar > > | clone () const |
| Clone. More... | |
| ~List () | |
| Destructor. More... | |
| void | resize (const label) |
| Alias for setSize(const label) More... | |
| void | resize (const label, const scalar &) |
| Alias for setSize(const label, const T&) More... | |
| void | setSize (const label) |
| Reset size of List. More... | |
| void | setSize (const label, const scalar &) |
| Reset size of List and value for new elements. More... | |
| void | clear () |
| Clear the list, i.e. set size to zero. More... | |
| void | append (const scalar &) |
| Append an element at the end of the list. More... | |
| void | append (const UList< scalar > &) |
| Append a List at the end of this list. More... | |
| void | append (const UIndirectList< scalar > &) |
| Append a UIndirectList at the end of this list. More... | |
| void | transfer (List< scalar > &) |
| Transfer the contents of the argument List into this list. More... | |
| void | transfer (DynamicList< scalar, SizeInc, SizeMult, SizeDiv > &) |
| Transfer the contents of the argument List into this list. More... | |
| void | transfer (SortableList< scalar > &) |
| Transfer the contents of the argument List into this list. More... | |
| scalar & | newElmt (const label) |
| Return subscript-checked element of UList. More... | |
| void | shallowCopy (const UList< scalar > &)=delete |
| Disallow implicit shallowCopy. More... | |
| void | operator= (const UList< scalar > &) |
| Assignment to UList operator. Takes linear time. More... | |
| void | operator= (const List< scalar > &) |
| Assignment operator. Takes linear time. More... | |
| void | operator= (List< scalar > &&) |
| Move assignment operator. More... | |
| void | operator= (const SLList< scalar > &) |
| Assignment to SLList operator. Takes linear time. More... | |
| void | operator= (const UIndirectList< scalar > &) |
| Assignment to UIndirectList operator. Takes linear time. More... | |
| void | operator= (const BiIndirectList< scalar > &) |
| Assignment to BiIndirectList operator. Takes linear time. More... | |
| void | operator= (std::initializer_list< scalar >) |
| Assignment to an initialiser list. More... | |
| void | operator= (const scalar &) |
| Assignment of all entries to the given value. More... | |
| void | operator= (const zero) |
| Assignment of all entries to zero. More... | |
| Public Member Functions inherited from UList< T > | |
| UList () | |
| Null constructor. More... | |
| UList (T *__restrict__ v, label size) | |
| Construct from components. More... | |
| UList (const UList< T > &)=default | |
| Copy construct. More... | |
| label | fcIndex (const label i) const |
| Return the forward circular index, i.e. the next index. More... | |
| label | rcIndex (const label i) const |
| Return the reverse circular index, i.e. the previous index. More... | |
| std::streamsize | byteSize () const |
| Return the binary size in number of characters of the UList. More... | |
| const T * | cdata () const |
| Return a const pointer to the first data element,. More... | |
| T * | data () |
| Return a pointer to the first data element,. More... | |
| T & | first () |
| Return the first element of the list. More... | |
| const T & | first () const |
| Return first element of the list. More... | |
| T & | last () |
| Return the last element of the list. More... | |
| const T & | last () const |
| Return the last element of the list. More... | |
| void | checkStart (const label start) const |
| Check start is within valid range (0 ... size-1) More... | |
| void | checkSize (const label size) const |
| Check size is within valid range (0 ... size) More... | |
| void | checkIndex (const label i) const |
| Check index i is within valid range (0 ... size-1) More... | |
| void | shallowCopy (const UList< T > &) |
| Copy the pointer held by the given UList. More... | |
| void | deepCopy (const UList< T > &) |
| Copy elements of the given UList. More... | |
| T & | operator[] (const label) |
| Return element of UList. More... | |
| const T & | operator[] (const label) const |
| Return element of constant UList. More... | |
| operator const Foam::List< T > & () const | |
| Allow cast to a const List<T>&. More... | |
| void | operator= (const T &) |
| Assignment of all entries to the given value. More... | |
| void | operator= (const zero) |
| Assignment of all entries to zero. More... | |
| iterator | begin () |
| Return an iterator to begin traversing the UList. More... | |
| iterator | end () |
| Return an iterator to end traversing the UList. More... | |
| const_iterator | cbegin () const |
| Return const_iterator to begin traversing the constant UList. More... | |
| const_iterator | cend () const |
| Return const_iterator to end traversing the constant UList. More... | |
| const_iterator | begin () const |
| Return const_iterator to begin traversing the constant UList. More... | |
| const_iterator | end () const |
| Return const_iterator to end traversing the constant UList. More... | |
| reverse_iterator | rbegin () |
| Return reverse_iterator to begin reverse traversing the UList. More... | |
| reverse_iterator | rend () |
| Return reverse_iterator to end reverse traversing the UList. More... | |
| const_reverse_iterator | crbegin () const |
| Return const_reverse_iterator to begin reverse traversing the UList. More... | |
| const_reverse_iterator | crend () const |
| Return const_reverse_iterator to end reverse traversing the UList. More... | |
| const_reverse_iterator | rbegin () const |
| Return const_reverse_iterator to begin reverse traversing the UList. More... | |
| const_reverse_iterator | rend () const |
| Return const_reverse_iterator to end reverse traversing the UList. More... | |
| label | size () const |
| Return the number of elements in the UList. More... | |
| label | max_size () const |
| Return size of the largest possible UList. More... | |
| bool | empty () const |
| Return true if the UList is empty (ie, size() is zero) More... | |
| void | swap (UList< T > &) |
| Swap two ULists of the same type in constant time. More... | |
| bool | operator== (const UList< T > &) const |
| Equality operation on ULists of the same type. More... | |
| bool | operator!= (const UList< T > &) const |
| The opposite of the equality operation. Takes linear time. More... | |
| bool | operator< (const UList< T > &) const |
| Compare two ULists lexicographically. Takes linear time. More... | |
| bool | operator> (const UList< T > &) const |
| Compare two ULists lexicographically. Takes linear time. More... | |
| bool | operator<= (const UList< T > &) const |
| Return true if !(a > b). Takes linear time. More... | |
| bool | operator>= (const UList< T > &) const |
| Return true if !(a < b). Takes linear time. More... | |
| const bool & | operator[] (const label i) const |
Static Public Attributes | |
| static scalar | p0 = 2e-5 |
| Reference pressure. More... | |
| Static Public Attributes inherited from Field< scalar > | |
| static const char *const | typeName |
Additional Inherited Members | |
| Public Types inherited from Field< scalar > | |
| typedef pTraits< scalar >::cmptType | cmptType |
| Component type. More... | |
| typedef SubField< scalar > | subField |
| Declare type of subField. More... | |
| Public Types inherited from List< scalar > | |
| typedef SubList< scalar > | subList |
| Declare type of subList. More... | |
| Public Types inherited from UList< T > | |
| typedef T | value_type |
| Type of values the UList contains. More... | |
| typedef T & | reference |
| Type that can be used for storing into. More... | |
| typedef const T & | const_reference |
| Type that can be used for storing into. More... | |
| typedef label | difference_type |
| The type that can represent the difference between any two. More... | |
| typedef label | size_type |
| The type that can represent the size of a UList. More... | |
| typedef T * | iterator |
| Random access iterator for traversing UList. More... | |
| typedef const T * | const_iterator |
| Random access iterator for traversing UList. More... | |
| typedef std::reverse_iterator< iterator > | reverse_iterator |
| Reverse iterator for reverse traversal of UList. More... | |
| typedef std::reverse_iterator< const_iterator > | const_reverse_iterator |
| Reverse iterator for reverse traversal of constant UList. More... | |
| Static Public Member Functions inherited from Field< scalar > | |
| static const Field< scalar > & | null () |
| Return a null field. More... | |
| static tmp< Field< scalar > > | NewCalculatedType (const Field< Type2 > &f) |
| Return a pointer to a new calculatedFvPatchFieldField created on. More... | |
| Static Public Member Functions inherited from List< scalar > | |
| static const List< scalar > & | null () |
| Return a null List. More... | |
| Static Public Member Functions inherited from UList< T > | |
| static const UList< T > & | null () |
| Return a null UList. More... | |
| Protected Member Functions inherited from refCount | |
| refCount () | |
| Construct null initialising count to 0. More... | |
| Protected Member Functions inherited from List< scalar > | |
| void | size (const label) |
| Override size to be inconsistent with allocated storage. More... | |
| noiseFFT | ( | const scalar | deltat, |
| const scalarField & | pressure | ||
| ) |
Construct from pressure field.
Definition at line 40 of file noiseFFT.C.
Construct from pressure field file name.
Definition at line 51 of file noiseFFT.C.
References IOstream::eof(), Foam::exit(), Foam::FatalError, FatalErrorInFunction, IOstream::good(), List< T >::size(), Field< scalar >::T(), and List< scalar >::transfer().
| Foam::Pair< Foam::scalarField > pt | ( | ) | const |
| Foam::tmp< Foam::scalarField > window | ( | const label | N, |
| const label | n | ||
| ) | const |
Return the nth window.
Definition at line 117 of file noiseFFT.C.
References Foam::endl(), Foam::exit(), Foam::FatalError, FatalErrorInFunction, forAll, Foam::offset(), and tmp< T >::ref().
| Foam::tmp< Foam::scalarField > Hanning | ( | const label | N | ) | const |
Return the Hanning window function.
Definition at line 149 of file noiseFFT.C.
References Foam::cos(), forAll, Foam::T(), and Foam::constant::mathematical::twoPi().
| Foam::tmp< Foam::scalarField > Pf | ( | const tmp< scalarField > & | pn | ) | const |
Return the fft of the given pressure data.
Definition at line 163 of file noiseFFT.C.
References tmp< T >::clear(), Foam::mag(), Foam::ReComplexField(), tmp< T >::ref(), fft::reverseTransform(), and Foam::sqrt().
| Foam::Pair< Foam::scalarField > meanPf | ( | const label | N, |
| const label | nw | ||
| ) | const |
Return the multi-window mean fft of the complete pressure data.
Definition at line 198 of file noiseFFT.C.
References Foam::exit(), f(), Foam::FatalError, FatalErrorInFunction, forAll, Foam::nl, and List< T >::size().
| Foam::Pair< Foam::scalarField > RMSmeanPf | ( | const label | N, |
| const label | nw | ||
| ) | const |
Return the multi-window RMS mean fft of the complete pressure data.
Definition at line 237 of file noiseFFT.C.
References Foam::endl(), Foam::exit(), f(), Foam::FatalError, FatalErrorInFunction, forAll, List< T >::size(), Foam::sqr(), and Foam::sqrt().
| Foam::Pair< Foam::scalarField > Lf | ( | const Pair< scalarField > & | gPf | ) | const |
Return the narrow-band PFL (pressure-fluctuation level) spectrum.
Definition at line 276 of file noiseFFT.C.
References Pair< Type >::first(), Foam::log10(), and Pair< Type >::second().
| Foam::Pair< Foam::scalarField > Ldelta | ( | const Pair< scalarField > & | gLf, |
| const scalar | f1, | ||
| const scalar | fU | ||
| ) | const |
Return the one-third-octave-band PFL spectrum.
starting at octave with mean frequency f1
Definition at line 285 of file noiseFFT.C.
References Foam::cbrt(), f(), Pair< Type >::first(), Foam::log10(), Foam::pow(), Pair< Type >::second(), List< T >::setSize(), List< T >::size(), and Foam::sqrt().
| Foam::Pair< Foam::scalarField > Pdelta | ( | const Pair< scalarField > & | gLf, |
| const scalar | f1, | ||
| const scalar | fU | ||
| ) | const |
Return the one-third-octave-band pressure spectrum.
starting at octave with mean frequency f1
Definition at line 334 of file noiseFFT.C.
References Foam::cbrt(), f(), Pair< Type >::first(), Pair< Type >::second(), List< T >::setSize(), List< T >::size(), Foam::sqr(), and Foam::sqrt().
| Foam::scalar Lsum | ( | const Pair< scalarField > & | gLf | ) | const |
Return the total PFL as the sum of Lf over all frequencies.
Definition at line 383 of file noiseFFT.C.
References forAll, Foam::log10(), Foam::pow(), and Pair< Type >::second().
| Foam::scalar dbToPa | ( | const scalar | db | ) | const |
Convert the db into Pa.
Definition at line 400 of file noiseFFT.C.
References Foam::pow().
| Foam::tmp< Foam::scalarField > dbToPa | ( | const tmp< scalarField > & | db | ) | const |
Convert the db-field into Pa.
Definition at line 406 of file noiseFFT.C.
References Foam::pow().
|
static |
Reference pressure.
Definition at line 61 of file noiseFFT.H.
1.9.1 
