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

#include <ProcessGrad.h>

Inheritance diagram for Nektar::Utilities::ProcessGrad:

Collaboration diagram for Nektar::Utilities::ProcessGrad:

Public Member Functions
	ProcessGrad (FieldSharedPtr f)

virtual	~ProcessGrad ()

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

virtual std::string	GetModuleName ()

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 (std::string key, std::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, std::set< int > &prismsDone, std::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...

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

Detailed Description

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

Definition at line 50 of file ProcessGrad.h.

Constructor & Destructor Documentation

Nektar::Utilities::ProcessGrad::ProcessGrad ( FieldSharedPtr f )

Definition at line 57 of file ProcessGrad.cpp.

                                          : ProcessModule(f)
 {
 }

Nektar::Utilities::ProcessGrad::~ProcessGrad ( )

virtual

Definition at line 61 of file ProcessGrad.cpp.

62 {

63 }

Member Function Documentation

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

inlinestatic

Creates an instance of this class.

Definition at line 54 of file ProcessGrad.h.

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

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

virtual std::string Nektar::Utilities::ProcessGrad::GetModuleName ( )

inlinevirtual

Implements Nektar::Utilities::Module.

Definition at line 65 of file ProcessGrad.h.

         {
             return "ProcessGrad";
         }

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

virtual

Write mesh to output file.

Implements Nektar::Utilities::Module.

Definition at line 65 of file ProcessGrad.cpp.

References Nektar::MultiRegions::DirCartesianMap, Nektar::Utilities::ProcessMapping::GetMapping(), Nektar::Utilities::Module::m_f, Nektar::GlobalMapping::MappingSharedPtr, and Vmath::Vcopy().

 {
     if (m_f->m_verbose)
     {
         if(m_f->m_comm->GetRank() == 0)
         {
             cout << "ProcessGrad: Calculating gradients..." << endl;
         }
     }
 
     int i, j;
     int expdim    = m_f->m_graph->GetMeshDimension();
     int spacedim  = m_f->m_fielddef[0]->m_numHomogeneousDir + expdim;
     int nfields   = m_f->m_fielddef[0]->m_fields.size();
     int addfields = nfields*spacedim;
 
     int npoints = m_f->m_exp[0]->GetNpoints();
     Array<OneD, Array<OneD, NekDouble> > grad(addfields);
     m_f->m_exp.resize(nfields+addfields);
 
     for (i = 0; i < addfields; ++i)
     {
         grad[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);
     }
     
     // Get mapping
     GlobalMapping::MappingSharedPtr mapping = 
                             ProcessMapping::GetMapping(m_f);
     
     // 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[i]->GetPhys(),
                                             vel[i]);
                 }
                 else
                 {
                     Vmath::Vcopy(npoints, m_f->m_exp[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[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[i]->GetPhys(), 1,
                                         vel[i], 1);
         }        
     }
 
     // Calculate Gradient
     for (i = 0; i < nfields; ++i)
     {
         for (j = 0; j < spacedim; ++j)
         {
             if (i<spacedim)
             {
                 m_f->m_exp[i]->PhysDeriv(MultiRegions::DirCartesianMap[j],
                                          vel[i],
                                          tmp[j]);
             }
             else
             {
                 m_f->m_exp[i]->PhysDeriv(MultiRegions::DirCartesianMap[j],
                                          m_f->m_exp[i]->GetPhys(),
                                          tmp[j]);                
             }
         }
         mapping->CovarToCartesian(tmp, tmp);
         for( int j = 0; j<spacedim; j++)
         {
             Vmath::Vcopy(npoints, tmp[j], 1, grad[i*spacedim+j], 1 );
         }
     }
 
     for (i = 0; i < addfields; ++i)
     {
         m_f->m_exp[nfields + i] = m_f->AppendExpList(m_f->m_fielddef[0]->m_numHomogeneousDir);
         m_f->m_exp[nfields + i]->UpdatePhys() = grad[i];
         m_f->m_exp[nfields + i]->FwdTrans_IterPerExp(grad[i],
                             m_f->m_exp[nfields + i]->UpdateCoeffs());
     }
 
     vector<string > outname;
     for (i = 0; i<nfields; ++i)
     {
         if(spacedim == 1)
         {
             outname.push_back(m_f->m_fielddef[0]->m_fields[i]+"_x");
         }
         else if (spacedim == 2)
         {
             outname.push_back(m_f->m_fielddef[0]->m_fields[i]+"_x");
             outname.push_back(m_f->m_fielddef[0]->m_fields[i]+"_y");
         }
         else if (spacedim == 3)
         {
             outname.push_back(m_f->m_fielddef[0]->m_fields[i]+"_x");
             outname.push_back(m_f->m_fielddef[0]->m_fields[i]+"_y");
             outname.push_back(m_f->m_fielddef[0]->m_fields[i]+"_z");
         }
     }
 
     std::vector<LibUtilities::FieldDefinitionsSharedPtr> FieldDef
         = m_f->m_exp[0]->GetFieldDefinitions();
     std::vector<std::vector<NekDouble> > FieldData(FieldDef.size());
 
     for (j = 0; j < nfields + addfields; ++j)
     {
         for (i = 0; i < FieldDef.size(); ++i)
         {
             if (j >= nfields)
             {
                 FieldDef[i]->m_fields.push_back(outname[j-nfields]);
             }
             else
             {
                 FieldDef[i]->m_fields.push_back(m_f->m_fielddef[0]->m_fields[j]);
             }
             m_f->m_exp[j]->AppendFieldData(FieldDef[i], FieldData[i]);
         }
     }
 
     m_f->m_fielddef = FieldDef;
     m_f->m_data     = FieldData;
 }

Member Data Documentation

ModuleKey Nektar::Utilities::ProcessGrad::className

static

Initial value:

=
    GetModuleFactory().RegisterCreatorFunction(
        ModuleKey(eProcessModule, "gradient"),
        ProcessGrad::create, "Computes gradient of fields.")

Definition at line 57 of file ProcessGrad.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