This processing module calculates the vorticity and adds it as an extra-field to the output file. More...

#include <ProcessVorticity.h>

Inheritance diagram for Nektar::Utilities::ProcessVorticity:

Collaboration diagram for Nektar::Utilities::ProcessVorticity:

Public Member Functions
	ProcessVorticity (FieldSharedPtr f)

virtual	~ProcessVorticity ()

virtual void	Process (po::variables_map &vm)
	Write mesh to output file. More...

Public Member Functions inherited from Nektar::Utilities::ProcessModule
	ProcessModule ()

	ProcessModule (FieldSharedPtr p_f)

	ProcessModule (MeshSharedPtr p_m)

Public Member Functions inherited from Nektar::Utilities::Module
	Module (FieldSharedPtr p_f)

void	RegisterConfig (string key, string value)
	Register a configuration option with a module. More...

void	PrintConfig ()
	Print out all configuration options for a module. More...

void	SetDefaults ()
	Sets default configuration options for those which have not been set. More...

bool	GetRequireEquiSpaced (void)

void	SetRequireEquiSpaced (bool pVal)

void	EvaluateTriFieldAtEquiSpacedPts (LocalRegions::ExpansionSharedPtr &exp, const Array< OneD, const NekDouble > &infield, Array< OneD, NekDouble > &outfield)

	Module (MeshSharedPtr p_m)

virtual void	Process ()=0

void	RegisterConfig (string key, string value)

void	PrintConfig ()

void	SetDefaults ()

MeshSharedPtr	GetMesh ()

virtual void	ProcessVertices ()
	Extract element vertices. More...

virtual void	ProcessEdges (bool ReprocessEdges=true)
	Extract element edges. More...

virtual void	ProcessFaces (bool ReprocessFaces=true)
	Extract element faces. More...

virtual void	ProcessElements ()
	Generate element IDs. More...

virtual void	ProcessComposites ()
	Generate composites. More...

virtual void	ClearElementLinks ()

Static Public Member Functions
static boost::shared_ptr< Module >	create (FieldSharedPtr f)
	Creates an instance of this class. More...

Static Public Attributes
static ModuleKey	className

Additional Inherited Members
Protected Member Functions inherited from Nektar::Utilities::Module
	Module ()

void	ReorderPrisms (PerMap &perFaces)
	Reorder node IDs so that prisms and tetrahedra are aligned correctly. More...

void	PrismLines (int prism, PerMap &perFaces, set< int > &prismsDone, vector< ElementSharedPtr > &line)

Protected Attributes inherited from Nektar::Utilities::Module
FieldSharedPtr	m_f
	Field object. More...

map< string, ConfigOption >	m_config
	List of configuration values. More...

bool	m_requireEquiSpaced

MeshSharedPtr	m_mesh
	Mesh object. More...

Detailed Description

This processing module calculates the vorticity and adds it as an extra-field to the output file.

Definition at line 49 of file ProcessVorticity.h.

Constructor & Destructor Documentation

Nektar::Utilities::ProcessVorticity::ProcessVorticity ( FieldSharedPtr f )

Definition at line 57 of file ProcessVorticity.cpp.

                                                    : ProcessModule(f)
 {
 }

Nektar::Utilities::ProcessVorticity::~ProcessVorticity ( )

virtual

Definition at line 61 of file ProcessVorticity.cpp.

62 {

63 }

Member Function Documentation

static boost::shared_ptr<Module> Nektar::Utilities::ProcessVorticity::create ( FieldSharedPtr f )

inlinestatic

Creates an instance of this class.

Definition at line 53 of file ProcessVorticity.h.

References Nektar::MemoryManager< DataType >::AllocateSharedPtr().

                                                                 {
             return MemoryManager<ProcessVorticity>::AllocateSharedPtr(f);
         }

void Nektar::Utilities::ProcessVorticity::Process ( po::variables_map & vm )

virtual

Write mesh to output file.

Implements Nektar::Utilities::Module.

Definition at line 65 of file ProcessVorticity.cpp.

References ASSERTL0, Nektar::Utilities::ProcessMapping::GetMapping(), Nektar::iterator, Nektar::Utilities::Module::m_f, Nektar::GlobalMapping::MappingSharedPtr, Vmath::Vcopy(), and Vmath::Vsub().

 {
     if (m_f->m_verbose)
     {
         cout << "ProcessVorticity: Calculating vorticity..." << endl;
     }
 
     int i, j, s;
     int expdim    = m_f->m_graph->GetMeshDimension();
     int spacedim  = expdim;
     if ((m_f->m_fielddef[0]->m_numHomogeneousDir) == 1 ||
         (m_f->m_fielddef[0]->m_numHomogeneousDir) == 2)
     {
         spacedim = 3;
     }
     int nfields = m_f->m_fielddef[0]->m_fields.size();
     if (spacedim == 1)
     {
         ASSERTL0(false, "Error: Vorticity for a 1D problem cannot "
                         "be computed")
     }
     int addfields = (spacedim == 2)? 1:3;
 
     int npoints = m_f->m_exp[0]->GetNpoints();
     Array<OneD, Array<OneD, NekDouble> > grad(spacedim*spacedim);
     Array<OneD, Array<OneD, NekDouble> > outfield(addfields);
 
     int nstrips;
 
     m_f->m_session->LoadParameter("Strip_Z",nstrips,1);
 
     m_f->m_exp.resize(nfields*nstrips);
 
     for (i = 0; i < spacedim*spacedim; ++i)
     {
         grad[i] = Array<OneD, NekDouble>(npoints);
     }
 
     for (i = 0; i < addfields; ++i)
     {
         outfield[i] = Array<OneD, NekDouble>(npoints);
     }
     
     Array<OneD, Array<OneD, NekDouble> >   tmp(spacedim);
     for( int i = 0; i<spacedim; i++)
     {
         tmp[i] = Array<OneD, NekDouble> (npoints);
     }
 
     vector<MultiRegions::ExpListSharedPtr> Exp(nstrips*addfields);
     
     // Get mapping
     GlobalMapping::MappingSharedPtr mapping = 
                             ProcessMapping::GetMapping(m_f);
     
     for(s = 0; s < nstrips; ++s) //homogeneous strip varient
     {
         // Get velocity and convert to Cartesian system,
         //      if it is still in transformed system
         Array<OneD, Array<OneD, NekDouble> > vel (spacedim);
         if (m_f->m_fieldMetaDataMap.count("MappingCartesianVel"))
         {
             if(m_f->m_fieldMetaDataMap["MappingCartesianVel"] == "False")
             {
                 // Initialize arrays and copy velocity
                 for ( int i =0; i<spacedim; ++i )
                 {
                     vel[i] = Array<OneD, NekDouble> (npoints);      
                     if (m_f->m_exp[0]->GetWaveSpace())
                     {
                         m_f->m_exp[0]->HomogeneousBwdTrans(
                                                 m_f->m_exp[s*nfields+i]->GetPhys(),
                                                 vel[i]);
                     }
                     else
                     {
                         Vmath::Vcopy(npoints, m_f->m_exp[s*nfields+i]->GetPhys(),1,
                                                 vel[i],1);
                     }
 
                 }
                 // Convert velocity to cartesian system
                 mapping->ContravarToCartesian(vel, vel);            
                 // Convert back to wavespace if necessary
                 if (m_f->m_exp[0]->GetWaveSpace())
                 {
                     for ( int i =0; i<spacedim; ++i )
                     {
                         m_f->m_exp[0]->HomogeneousFwdTrans(vel[i], vel[i]);
                     }
                 }        
             }
             else
             {
                 for ( int i =0; i<spacedim; ++i )
                 {
                     vel[i] = Array<OneD, NekDouble> (npoints); 
                     Vmath::Vcopy(npoints, m_f->m_exp[s*nfields+i]->GetPhys(), 1,
                                                 vel[i], 1);
                 }
             }
         }
         else
         {
             for ( int i =0; i<spacedim; ++i )
             {
                 vel[i] = Array<OneD, NekDouble> (npoints); 
                 Vmath::Vcopy(npoints, m_f->m_exp[s*nfields+i]->GetPhys(), 1,
                                             vel[i], 1);
             }
         }
         
         // Calculate Gradient & Vorticity
         if (spacedim == 2)
         {
             for (i = 0; i < spacedim; ++i)
             {
                 m_f->m_exp[s*nfields+i]->PhysDeriv(vel[i],
                                                    tmp[0],
                                                    tmp[1]);
                 mapping->CovarToCartesian(tmp, tmp);
                 for( int j = 0; j<spacedim; j++)
                 {
                     Vmath::Vcopy(npoints, tmp[j], 1, grad[i*spacedim+j], 1 );
                 }
             }
             // W_z = Vx - Uy
             Vmath::Vsub(npoints, grad[1*spacedim+0], 1,
                         grad[0*spacedim+1], 1,
                         outfield[0], 1);
         }
         else
         {
             for (i = 0; i < spacedim; ++i)
             {
                 m_f->m_exp[s*nfields+i]->PhysDeriv(vel[i],
                                                     tmp[0],
                                                     tmp[1],
                                                     tmp[2]);
                 mapping->CovarToCartesian(tmp, tmp);
                 for( int j = 0; j<spacedim; j++)
                 {
                     Vmath::Vcopy(npoints, tmp[j], 1, grad[i*spacedim+j], 1 );
                 }
             }
 
             // W_x = Wy - Vz
             Vmath::Vsub(npoints, grad[2*spacedim+1], 1, grad[1*spacedim+2], 1,
                         outfield[0],1);
             // W_y = Uz - Wx
             Vmath::Vsub(npoints, grad[0*spacedim+2], 1, grad[2*spacedim+0], 1,
                         outfield[1], 1);
             // W_z = Vx - Uy
             Vmath::Vsub(npoints, grad[1*spacedim+0], 1, grad[0*spacedim+1], 1,
                         outfield[2], 1);
         }
 
         for (i = 0; i < addfields; ++i)
         {
             int n = s*addfields + i;
             Exp[n] = m_f->AppendExpList(m_f->m_fielddef[0]->m_numHomogeneousDir);
             Exp[n]->UpdatePhys() = outfield[i];
             Exp[n]->FwdTrans_IterPerExp(outfield[i],
                             Exp[n]->UpdateCoeffs());
         }
     }
 
     vector<MultiRegions::ExpListSharedPtr>::iterator it;
     for(s = 0; s < nstrips; ++s)
     {
         for(i = 0; i < addfields; ++i)
         {
             it = m_f->m_exp.begin()+s*(nfields+addfields)+nfields+i;
             m_f->m_exp.insert(it, Exp[s*addfields+i]);
         }
     }
 
     vector<string > outname;
     if (addfields == 1)
     {
         outname.push_back("W_z");
     }
     else
     {
         outname.push_back("W_x");
         outname.push_back("W_y");
         outname.push_back("W_z");
     }
 
     std::vector<LibUtilities::FieldDefinitionsSharedPtr> FieldDef
         = m_f->m_exp[0]->GetFieldDefinitions();
     std::vector<std::vector<NekDouble> > FieldData(FieldDef.size());
 
     for(s = 0; s < nstrips; ++s) //homogeneous strip varient
     {
         for (j = 0; j < nfields + addfields; ++j)
         {
             for (i = 0; i < FieldDef.size()/nstrips; ++i)
             {
                 int n = s * FieldDef.size()/nstrips + i;
 
                 if (j >= nfields)
                 {
                     FieldDef[n]->m_fields.push_back(outname[j-nfields]);
                 }
                 else
                 {
                     FieldDef[n]->m_fields.push_back(m_f->m_fielddef[0]->m_fields[j]);
                 }
                 m_f->m_exp[s*(nfields + addfields)+j]->AppendFieldData(FieldDef[n], FieldData[n]);
             }
         }
     }
 
     m_f->m_fielddef = FieldDef;
     m_f->m_data     = FieldData;
 }

Member Data Documentation

ModuleKey Nektar::Utilities::ProcessVorticity::className

static

Initial value:

=
    GetModuleFactory().RegisterCreatorFunction(
        ModuleKey(eProcessModule, "vorticity"),
        ProcessVorticity::create, "Computes vorticity field.")

Definition at line 56 of file ProcessVorticity.h.

Public Member Functions

Static Public Member Functions

Static Public Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation