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. 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...

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 ()
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...
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 55 of file ProcessVorticity.cpp.

                                                   : ProcessModule(f)
{
}

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

virtual

Definition at line 59 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.

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 63 of file ProcessVorticity.cpp.

References ASSERTL0, Nektar::iterator, Nektar::Utilities::Module::m_f, 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(nfields*nfields);
    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 < nfields*nfields; ++i)
    {
        grad[i] = Array<OneD, NekDouble>(npoints);
    }

    for (i = 0; i < addfields; ++i)
    {
        outfield[i] = Array<OneD, NekDouble>(npoints);
    }

    vector<MultiRegions::ExpListSharedPtr> Exp(nstrips*addfields);

    for(s = 0; s < nstrips; ++s) //homogeneous strip varient
    {
        // Calculate Gradient & Vorticity
        if (spacedim == 2)
        {
            for (i = 0; i < nfields; ++i)
            {
                m_f->m_exp[s*nfields+i]->PhysDeriv(m_f->m_exp[s*nfields+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[s*nfields+i]->PhysDeriv(m_f->m_exp[s*nfields+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)
        {
            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.