Nektar::Utilities::ProcessVorticity Class Reference

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.
Public Member Functions inherited from Nektar::Utilities::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.
void	PrintConfig ()
	Print out all configuration options for a module.
void	SetDefaults ()
	Sets default configuration options for those which have not been set.
bool	GetRequireEquiSpaced (void)
void	SetRequireEquiSpaced (bool pVal)
	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.

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

Static Public Attributes
static ModuleKey	className

Additional Inherited Members
Protected Member Functions inherited from Nektar::Utilities::Module
virtual void	ProcessEdges (bool ReprocessEdges=true)
	Extract element edges.
virtual void	ProcessFaces (bool ReprocessFaces=true)
	Extract element faces.
virtual void	ProcessElements ()
	Generate element IDs.
virtual void	ProcessComposites ()
	Generate composites.
void	ReorderPrisms (PerMap &perFaces)
	Reorder node IDs so that prisms and tetrahedra are aligned correctly.
void	PrismLines (int prism, PerMap &perFaces, set< int > &prismsDone, vector< ElementSharedPtr > &line)
Protected Attributes inherited from Nektar::Utilities::Module
FieldSharedPtr	m_f
	Field object.
map< string, ConfigOption >	m_config
	List of configuration values.
bool	m_requireEquiSpaced
MeshSharedPtr	m_mesh
	Mesh object.

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 54 of file ProcessVorticity.cpp.

                                                           : ProcessModule(f)
        {
        }

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

virtual

Definition at line 58 of file ProcessVorticity.cpp.

        {
        }

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.

                                                                    {
                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 62 of file ProcessVorticity.cpp.

References ASSERTL0, Nektar::Utilities::Module::m_f, and Vmath::Vsub().

        {
            if (m_f->m_verbose)
            {
                cout << "ProcessVorticity: Calculating vorticity..." << endl;
            }
            
            int i, j;
            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(nfields*nfields);
            Array<OneD, Array<OneD, NekDouble> > outfield(addfields);
            m_f->m_exp.resize(nfields+addfields);

            
            for (i = 0; i < nfields*nfields; ++i)
            {
                grad[i] = Array<OneD, NekDouble>(npoints);
            }
            
            for (i = 0; i < addfields; ++i)
            {
                outfield[i] = Array<OneD, NekDouble>(npoints);
            }
            
            // Calculate Gradient & Vorticity
            if (spacedim == 2)
            {
                for (i = 0; i < nfields; ++i)
                {
                    m_f->m_exp[i]->PhysDeriv(m_f->m_exp[i]->GetPhys(), 
                                             grad[i*nfields], 
                                             grad[i*nfields+1]);
                }
                // W_z = Vx - Uy
                Vmath::Vsub(npoints, grad[1*nfields+0], 1, 
                            grad[0*nfields+1], 1, 
                            outfield[0], 1);
            }
            else
            {
                for (i = 0; i < nfields; ++i)
                {

                    m_f->m_exp[i]->PhysDeriv(m_f->m_exp[i]->GetPhys(), 
                                             grad[i*nfields], 
                                             grad[i*nfields+1],
                                             grad[i*nfields+2]);
                }
                
                // W_x = Wy - Vz
                Vmath::Vsub(npoints, grad[2*nfields+1], 1, grad[1*nfields+2], 1, 
                            outfield[0],1);
                // W_y = Uz - Wx
                Vmath::Vsub(npoints, grad[0*nfields+2], 1, grad[2*nfields+0], 1, 
                            outfield[1], 1);
                // W_z = Vx - Uy
                Vmath::Vsub(npoints, grad[1*nfields+0], 1, grad[0*nfields+1], 1, 
                            outfield[2], 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() = outfield[i];
                m_f->m_exp[nfields + i]->FwdTrans_IterPerExp(outfield[i],
                                    m_f->m_exp[nfields + i]->UpdateCoeffs());
            }
            
            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 (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::ProcessVorticity::className

static

Initial value:

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

Definition at line 56 of file ProcessVorticity.h.