OOFEM  2.4
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oofem::SurfaceTensionBoundaryCondition Class Reference

Computes the load (and possibly tangent) for surface tension. More...

#include <surfacetensionbc.h>

+ Inheritance diagram for oofem::SurfaceTensionBoundaryCondition:
+ Collaboration diagram for oofem::SurfaceTensionBoundaryCondition:

Public Member Functions

 SurfaceTensionBoundaryCondition (int n, Domain *d)
 Constructor. More...
 
virtual ~SurfaceTensionBoundaryCondition ()
 Destructor. More...
 
virtual IRResultType initializeFrom (InputRecord *ir)
 Initializes receiver according to object description stored in input record. More...
 
virtual void assemble (SparseMtrx &answer, TimeStep *tStep, CharType type, const UnknownNumberingScheme &r_s, const UnknownNumberingScheme &c_s, double scale=1.0)
 Assembles B.C. More...
 
virtual void assembleVector (FloatArray &answer, TimeStep *tStep, CharType type, ValueModeType mode, const UnknownNumberingScheme &s, FloatArray *eNorms=NULL)
 Assembles B.C. More...
 
virtual void giveLocationArrays (std::vector< IntArray > &rows, std::vector< IntArray > &cols, CharType type, const UnknownNumberingScheme &r_s, const UnknownNumberingScheme &c_s)
 Gives a list of location arrays that will be assembled. More...
 
virtual const char * giveClassName () const
 
virtual const char * giveInputRecordName () const
 
- Public Member Functions inherited from oofem::ActiveBoundaryCondition
 ActiveBoundaryCondition (int n, Domain *d)
 Constructor. More...
 
virtual ~ActiveBoundaryCondition ()
 Destructor. More...
 
virtual void addElementSide (int elem, int side)
 Adds element for active boundary condition. More...
 
virtual bool requiresActiveDofs ()
 Checks to see if active boundary condition requires special DOFs. More...
 
virtual bool isPrimaryDof (ActiveDof *dof)
 Checks to see if the dof is a primary DOF. More...
 
virtual double giveBcValue (Dof *dof, ValueModeType mode, TimeStep *tStep)
 Returns the prescribed value of a dof (if any). More...
 
virtual bool hasBc (Dof *dof, TimeStep *tStep)
 Returns the prescribed value of a dof (if any). More...
 
virtual int giveNumberOfMasterDofs (ActiveDof *dof)
 Allows for active boundary conditions to handle their own special DOF. More...
 
virtual DofgiveMasterDof (ActiveDof *dof, int mdof)
 Give the pointer to master dof belonging to active DOF. More...
 
virtual void computeDofTransformation (ActiveDof *dof, FloatArray &masterContribs)
 
virtual double giveUnknown (PrimaryField &field, ValueModeType mode, TimeStep *tStep, ActiveDof *dof)
 Computes the value of the dof. More...
 
virtual double giveUnknown (ValueModeType mode, TimeStep *tStep, ActiveDof *dof)
 Computes the value of the dof. More...
 
- Public Member Functions inherited from oofem::GeneralBoundaryCondition
 GeneralBoundaryCondition (int n, Domain *d)
 Constructor. More...
 
virtual ~GeneralBoundaryCondition ()
 Destructor. More...
 
int giveSetNumber ()
 Gives the set number which boundary condition is applied to. More...
 
virtual int giveNumberOfInternalDofManagers ()
 Gives the number of internal dof managers. More...
 
virtual DofManagergiveInternalDofManager (int i)
 Gives an internal dof manager from receiver. More...
 
FunctiongiveTimeFunction ()
 
virtual bcValType giveBCValType () const
 Returns receiver load type. More...
 
virtual bool isImposed (TimeStep *tStep)
 Returns nonzero if receiver representing BC is imposed at given time, otherwise returns zero. More...
 
virtual const IntArraygiveDofIDs () const
 Array with default dofs which b.c. More...
 
virtual bcType giveType () const
 
virtual bcGeomType giveBCGeoType () const
 Returns geometry character of boundary condition. More...
 
virtual void scale (double s)
 Scales the receiver according to given value. More...
 
virtual void postInitialize ()
 Performs post initialization steps. More...
 
virtual void giveInputRecord (DynamicInputRecord &input)
 Setups the input record string of receiver. More...
 
virtual contextIOResultType saveContext (DataStream &stream, ContextMode mode, void *obj=NULL)
 Stores receiver state to output stream. More...
 
virtual contextIOResultType restoreContext (DataStream &stream, ContextMode mode, void *obj=NULL)
 Restores the receiver state previously written in stream. More...
 
- Public Member Functions inherited from oofem::FEMComponent
 FEMComponent (int n, Domain *d)
 Regular constructor, creates component with given number and belonging to given domain. More...
 
virtual ~FEMComponent ()
 Virtual destructor. More...
 
DomaingiveDomain () const
 
virtual void setDomain (Domain *d)
 Sets associated Domain. More...
 
int giveNumber () const
 
void setNumber (int num)
 Sets number of receiver. More...
 
virtual void updateLocalNumbering (EntityRenumberingFunctor &f)
 Local renumbering support. More...
 
virtual int checkConsistency ()
 Allows programmer to test some internal data, before computation begins. More...
 
virtual void printOutputAt (FILE *file, TimeStep *tStep)
 Prints output of receiver to stream, for given time step. More...
 
virtual void printYourself ()
 Prints receiver state on stdout. Useful for debugging. More...
 
virtual InterfacegiveInterface (InterfaceType t)
 Interface requesting service. More...
 
std::string errorInfo (const char *func) const
 Returns string for prepending output (used by error reporting macros). More...
 

Protected Member Functions

void computeLoadVectorFromElement (FloatArray &answer, Element *e, int side, TimeStep *tStep)
 Helper function for computing the contributions to the load vector. More...
 
void computeTangentFromElement (FloatMatrix &answer, Element *e, int side, TimeStep *tStep)
 Helper function for computing the tangent ( $ K = \frac{\mathrm{d}F}{\mathrm{d}u} $) More...
 

Private Attributes

double gamma
 Surface tension. More...
 
bool useTangent
 Determines if tangent should be used. More...
 

Additional Inherited Members

- Protected Attributes inherited from oofem::GeneralBoundaryCondition
int timeFunction
 Associated load time function. More...
 
bcValType valType
 Physical meaning of BC value. More...
 
IntArray dofs
 Dofs that b.c. is applied to (relevant for Dirichlet type b.c.s). More...
 
int isImposedTimeFunction
 Zero by default - the BC is than always imposed. More...
 
int set
 Set number for boundary condition to be applied to. More...
 
- Protected Attributes inherited from oofem::FEMComponent
int number
 Component number. More...
 
Domaindomain
 Link to domain object, useful for communicating with other FEM components. More...
 

Detailed Description

Computes the load (and possibly tangent) for surface tension.

This boundary condition applicable to both solid and flow problems. Computing this load and tangent is involves some fairly complicated expression with lengthy derivations, especially for 3D surfaces.

Definition at line 57 of file surfacetensionbc.h.

Constructor & Destructor Documentation

oofem::SurfaceTensionBoundaryCondition::SurfaceTensionBoundaryCondition ( int  n,
Domain d 
)
inline

Constructor.

Creates boundary an active condition with given number, belonging to given domain.

Parameters
nBoundary condition number.
dDomain to which new object will belongs.

Definition at line 68 of file surfacetensionbc.h.

virtual oofem::SurfaceTensionBoundaryCondition::~SurfaceTensionBoundaryCondition ( )
inlinevirtual

Destructor.

Definition at line 70 of file surfacetensionbc.h.

Member Function Documentation

void oofem::SurfaceTensionBoundaryCondition::assemble ( SparseMtrx answer,
TimeStep tStep,
CharType  type,
const UnknownNumberingScheme r_s,
const UnknownNumberingScheme c_s,
double  scale = 1.0 
)
virtual

Assembles B.C.

contributions to specified matrix.

Parameters
[in,out]answerMatrix to assemble to.
tStepActive time step.
tStepActive time step.
typeType of matrix to assemble.
r_sRow numbering scheme.
c_sColumn numbering scheme.
scaleScaling factor.

Reimplemented from oofem::ActiveBoundaryCondition.

Definition at line 95 of file surfacetensionbc.C.

References oofem::SparseMtrx::assemble(), oofem::IntArray::at(), oofem::FEInterpolation::boundaryGiveNodes(), computeTangentFromElement(), oofem::GeneralBoundaryCondition::dofs, oofem::Element::giveBoundaryLocationArray(), oofem::FEMComponent::giveDomain(), oofem::Domain::giveElement(), oofem::Element::giveInterpolation(), oofem::Domain::giveSet(), oofem::IntArray::giveSize(), OOFEM_ERROR, oofem::FloatMatrix::times(), and useTangent.

void oofem::SurfaceTensionBoundaryCondition::assembleVector ( FloatArray answer,
TimeStep tStep,
CharType  type,
ValueModeType  mode,
const UnknownNumberingScheme s,
FloatArray eNorms = NULL 
)
virtual

Assembles B.C.

contributions to specified vector.

Parameters
[in,out]answerVector to assemble to.
tStepActive time step.
typeType of matrix to assemble.
modeMode of value.
sNumbering scheme.
eNormsNorms for each dofid.
Returns
Equivalent of the sum of the element norm (squared) of assembled vector.

Reimplemented from oofem::ActiveBoundaryCondition.

Definition at line 124 of file surfacetensionbc.C.

References oofem::FloatArray::assemble(), oofem::FloatArray::assembleSquared(), oofem::IntArray::at(), oofem::FEInterpolation::boundaryGiveNodes(), computeLoadVectorFromElement(), oofem::GeneralBoundaryCondition::dofs, oofem::Element::giveBoundaryLocationArray(), oofem::FEMComponent::giveDomain(), oofem::Domain::giveElement(), oofem::Element::giveInterpolation(), oofem::Domain::giveSet(), and oofem::IntArray::giveSize().

void oofem::SurfaceTensionBoundaryCondition::computeLoadVectorFromElement ( FloatArray answer,
Element e,
int  side,
TimeStep tStep 
)
protected
void oofem::SurfaceTensionBoundaryCondition::computeTangentFromElement ( FloatMatrix answer,
Element e,
int  side,
TimeStep tStep 
)
protected
virtual const char* oofem::SurfaceTensionBoundaryCondition::giveClassName ( ) const
inlinevirtual
Returns
Class name of the receiver.

Implements oofem::FEMComponent.

Definition at line 84 of file surfacetensionbc.h.

virtual const char* oofem::SurfaceTensionBoundaryCondition::giveInputRecordName ( ) const
inlinevirtual
Returns
Input record name of the receiver.

Implements oofem::FEMComponent.

Definition at line 85 of file surfacetensionbc.h.

References _IFT_SurfaceTensionBoundaryCondition_Name.

void oofem::SurfaceTensionBoundaryCondition::giveLocationArrays ( std::vector< IntArray > &  rows,
std::vector< IntArray > &  cols,
CharType  type,
const UnknownNumberingScheme r_s,
const UnknownNumberingScheme c_s 
)
virtual

Gives a list of location arrays that will be assembled.

This should only be used to construct zero structure in sparse matrices. The rows and columns location arrays returned in tuples (stored in vector), allowing to efficiently assemble and allocate off-diagonal blocks. The nonzero entries are assembled and allocated for entries at (rows[i], cols[i]) positions.

Parameters
rowsList of location arrays for r_s.
colsList of location arrays for c_s.
typeType of matrix to assemble.
r_sRow numbering scheme.
c_sColumn numbering scheme.

Reimplemented from oofem::ActiveBoundaryCondition.

Definition at line 70 of file surfacetensionbc.C.

References oofem::IntArray::at(), oofem::FEInterpolation::boundaryGiveNodes(), oofem::GeneralBoundaryCondition::dofs, oofem::Element::giveBoundaryLocationArray(), oofem::FEMComponent::giveDomain(), oofem::Domain::giveElement(), oofem::Element::giveInterpolation(), oofem::Domain::giveSet(), oofem::IntArray::giveSize(), oofem::IntArray::resize(), and useTangent.

IRResultType oofem::SurfaceTensionBoundaryCondition::initializeFrom ( InputRecord ir)
virtual

Initializes receiver according to object description stored in input record.

This function is called immediately after creating object using constructor. Input record can be imagined as data record in component database belonging to receiver. Receiver may use value-name extracting functions to extract particular field from record.

See also
IR_GIVE_FIELD
IR_GIVE_OPTIONAL_FIELD
Parameters
irInput record to initialize from.
Returns
IRResultType

Reimplemented from oofem::ActiveBoundaryCondition.

Definition at line 59 of file surfacetensionbc.C.

References _IFT_SurfaceTensionBoundaryCondition_gamma, _IFT_SurfaceTensionBoundaryCondition_useTangent, gamma, oofem::InputRecord::hasField(), oofem::ActiveBoundaryCondition::initializeFrom(), IR_GIVE_FIELD, and useTangent.

Member Data Documentation

double oofem::SurfaceTensionBoundaryCondition::gamma
private

Surface tension.

Definition at line 59 of file surfacetensionbc.h.

Referenced by computeLoadVectorFromElement(), computeTangentFromElement(), and initializeFrom().

bool oofem::SurfaceTensionBoundaryCondition::useTangent
private

Determines if tangent should be used.

Definition at line 60 of file surfacetensionbc.h.

Referenced by assemble(), giveLocationArrays(), and initializeFrom().


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

This page is part of the OOFEM documentation. Copyright (c) 2011 Borek Patzak
Project e-mail: info@oofem.org
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