Pressure inflow boundary conditions for compressible flow problems where either the density and the velocities are assigned from a file or the full state is assigned from a file (depending on the problem type, either subsonic or supersonic). More...

#include <PressureInflowFileBC.h>

Inheritance diagram for Nektar::PressureInflowFileBC:

[legend]

Static Public Member Functions
static CFSBndCondSharedPtr	create (const LibUtilities::SessionReaderSharedPtr &pSession, const Array< OneD, MultiRegions::ExpListSharedPtr > &pFields, const Array< OneD, Array< OneD, NekDouble >> &pTraceNormals, const int pSpaceDim, const int bcRegion, const int cnt)
	Creates an instance of this class. More...

Static Public Attributes
static std::string	className
	Name of the class. More...

Protected Member Functions
virtual void	v_Apply (Array< OneD, Array< OneD, NekDouble >> &Fwd, Array< OneD, Array< OneD, NekDouble >> &physarray, const NekDouble &time) override

Protected Member Functions inherited from Nektar::CFSBndCond
	CFSBndCond (const LibUtilities::SessionReaderSharedPtr &pSession, const Array< OneD, MultiRegions::ExpListSharedPtr > &pFields, const Array< OneD, Array< OneD, NekDouble >> &pTraceNormals, const int pSpaceDim, const int bcRegion, const int cnt)
	Constructor. More...

virtual void	v_ApplyBwdWeight ()

Private Member Functions
	PressureInflowFileBC (const LibUtilities::SessionReaderSharedPtr &pSession, const Array< OneD, MultiRegions::ExpListSharedPtr > &pFields, const Array< OneD, Array< OneD, NekDouble >> &pTraceNormals, const int pSpaceDim, const int bcRegion, const int cnt)

virtual	~PressureInflowFileBC (void)

Private Attributes
Array< OneD, Array< OneD, NekDouble > >	m_fieldStorage

Friends
class	MemoryManager< PressureInflowFileBC >

Additional Inherited Members
Public Member Functions inherited from Nektar::CFSBndCond
virtual	~CFSBndCond ()

void	Apply (Array< OneD, Array< OneD, NekDouble >> &Fwd, Array< OneD, Array< OneD, NekDouble >> &physarray, const NekDouble &time=0)
	Apply the boundary condition. More...

void	ApplyBwdWeight ()
	Apply the Weight of boundary condition. More...

Protected Attributes inherited from Nektar::CFSBndCond
LibUtilities::SessionReaderSharedPtr	m_session
	Session reader. More...

Array< OneD, MultiRegions::ExpListSharedPtr >	m_fields
	Array of fields. More...

Array< OneD, Array< OneD, NekDouble > >	m_traceNormals
	Trace normals. More...

int	m_spacedim
	Space dimension. More...

VariableConverterSharedPtr	m_varConv
	Auxiliary object to convert variables. More...

NekDouble	m_diffusionAveWeight
	Weight for average calculation of diffusion term. More...

NekDouble	m_gamma
	Parameters of the flow. More...

NekDouble	m_rhoInf

NekDouble	m_pInf

NekDouble	m_pOut

Array< OneD, NekDouble >	m_velInf

int	m_bcRegion
	Id of the boundary region. More...

int	m_offset
	Offset. More...

Detailed Description

Pressure inflow boundary conditions for compressible flow problems where either the density and the velocities are assigned from a file or the full state is assigned from a file (depending on the problem type, either subsonic or supersonic).

Definition at line 49 of file PressureInflowFileBC.h.

Constructor & Destructor Documentation

◆ PressureInflowFileBC()

Nektar::PressureInflowFileBC::PressureInflowFileBC	(	const LibUtilities::SessionReaderSharedPtr &	pSession,
		const Array< OneD, MultiRegions::ExpListSharedPtr > &	pFields,
		const Array< OneD, Array< OneD, NekDouble >> &	pTraceNormals,
		const int	pSpaceDim,
		const int	bcRegion,
		const int	cnt
	)

private

Definition at line 49 of file PressureInflowFileBC.cpp.

     : CFSBndCond(pSession, pFields, pTraceNormals, pSpaceDim, bcRegion, cnt)
 {
     int nvariables = m_fields.size();
     // Loop over Boundary Regions for PressureInflowFileBC
     m_fieldStorage = Array<OneD, Array<OneD, NekDouble>>(nvariables);
  
     int numBCPts =
         m_fields[0]->GetBndCondExpansions()[m_bcRegion]->GetNpoints();
     for (int i = 0; i < nvariables; ++i)
     {
         m_fieldStorage[i] = Array<OneD, NekDouble>(numBCPts, 0.0);
         Vmath::Vcopy(numBCPts,
                      m_fields[i]->GetBndCondExpansions()[m_bcRegion]->GetPhys(),
                      1, m_fieldStorage[i], 1);
     }
 }

References Nektar::CFSBndCond::m_bcRegion, Nektar::CFSBndCond::m_fields, m_fieldStorage, and Vmath::Vcopy().

◆ ~PressureInflowFileBC()

virtual Nektar::PressureInflowFileBC::~PressureInflowFileBC ( void )

inlineprivatevirtual

Definition at line 82 of file PressureInflowFileBC.h.

82 {};

Member Function Documentation

◆ create()

static CFSBndCondSharedPtr Nektar::PressureInflowFileBC::create	(	const LibUtilities::SessionReaderSharedPtr &	pSession,
		const Array< OneD, MultiRegions::ExpListSharedPtr > &	pFields,
		const Array< OneD, Array< OneD, NekDouble >> &	pTraceNormals,
		const int	pSpaceDim,
		const int	bcRegion,
		const int	cnt
	)

inlinestatic

Creates an instance of this class.

Definition at line 55 of file PressureInflowFileBC.h.

     {
         CFSBndCondSharedPtr p =
             MemoryManager<PressureInflowFileBC>::AllocateSharedPtr(
                 pSession, pFields, pTraceNormals, pSpaceDim, bcRegion, cnt);
         return p;
     }

References Nektar::MemoryManager< DataType >::AllocateSharedPtr(), and CellMLToNektar.cellml_metadata::p.

◆ v_Apply()

void Nektar::PressureInflowFileBC::v_Apply	(	Array< OneD, Array< OneD, NekDouble >> &	Fwd,
		Array< OneD, Array< OneD, NekDouble >> &	physarray,
		const NekDouble &	time
	)

overrideprotectedvirtual

Implements Nektar::CFSBndCond.

Definition at line 71 of file PressureInflowFileBC.cpp.

 {
     boost::ignore_unused(time);
  
     int i, j;
     int nTracePts   = m_fields[0]->GetTrace()->GetNpoints();
     int nVariables  = physarray.size();
     int nDimensions = m_spacedim;
  
     const Array<OneD, const int> &traceBndMap = m_fields[0]->GetTraceBndMap();
  
     // Computing the normal velocity for characteristics coming
     // from inside the computational domain
     Array<OneD, NekDouble> Vn(nTracePts, 0.0);
     Array<OneD, NekDouble> Vel(nTracePts, 0.0);
     for (i = 0; i < nDimensions; ++i)
     {
         Vmath::Vdiv(nTracePts, Fwd[i + 1], 1, Fwd[0], 1, Vel, 1);
         Vmath::Vvtvp(nTracePts, m_traceNormals[i], 1, Vel, 1, Vn, 1, Vn, 1);
     }
  
     // Computing the absolute value of the velocity in order to compute the
     // Mach number to decide whether supersonic or subsonic
     Array<OneD, NekDouble> absVel(nTracePts, 0.0);
     m_varConv->GetAbsoluteVelocity(Fwd, absVel);
  
     // Get speed of sound
     Array<OneD, NekDouble> pressure(nTracePts);
     Array<OneD, NekDouble> soundSpeed(nTracePts);
  
     m_varConv->GetPressure(Fwd, pressure);
     m_varConv->GetSoundSpeed(Fwd, soundSpeed);
  
     // Get Mach
     Array<OneD, NekDouble> Mach(nTracePts, 0.0);
     Vmath::Vdiv(nTracePts, Vn, 1, soundSpeed, 1, Mach, 1);
     Vmath::Vabs(nTracePts, Mach, 1, Mach, 1);
  
     // Auxiliary variables
     int e, id1, id2, npts, pnt;
     NekDouble rhoeb;
  
     // Loop on the m_bcRegions
     for (e = 0;
          e < m_fields[0]->GetBndCondExpansions()[m_bcRegion]->GetExpSize(); ++e)
     {
         npts = m_fields[0]
                    ->GetBndCondExpansions()[m_bcRegion]
                    ->GetExp(e)
                    ->GetTotPoints();
         id1 =
             m_fields[0]->GetBndCondExpansions()[m_bcRegion]->GetPhys_Offset(e);
         id2 =
             m_fields[0]->GetTrace()->GetPhys_Offset(traceBndMap[m_offset + e]);
  
         // Get internal energy
         Array<OneD, NekDouble> tmpPressure(npts, pressure + id2);
         Array<OneD, NekDouble> rho(npts, Fwd[0] + id2);
         Array<OneD, NekDouble> e(npts);
         m_varConv->GetEFromRhoP(rho, tmpPressure, e);
  
         // Loop on points of m_bcRegion 'e'
         for (i = 0; i < npts; i++)
         {
             pnt = id2 + i;
  
             // Subsonic flows
             if (Mach[pnt] < 0.99)
             {
                 // Partial extrapolation for subsonic cases
                 for (j = 0; j < nVariables - 1; ++j)
                 {
                     (m_fields[j]
                          ->GetBndCondExpansions()[m_bcRegion]
                          ->UpdatePhys())[id1 + i] = m_fieldStorage[j][id1 + i];
                 }
  
                 // Kinetic energy calculation
                 NekDouble Ek = 0.0;
                 for (j = 1; j < nVariables - 1; ++j)
                 {
                     Ek += 0.5 *
                           (m_fieldStorage[j][id1 + i] *
                            m_fieldStorage[j][id1 + i]) /
                           m_fieldStorage[0][id1 + i];
                 }
  
                 rhoeb = Fwd[0][pnt] * e[i] + Ek;
  
                 (m_fields[nVariables - 1]
                      ->GetBndCondExpansions()[m_bcRegion]
                      ->UpdatePhys())[id1 + i] = rhoeb;
             }
             // Supersonic flows
             else
             {
                 for (j = 0; j < nVariables; ++j)
                 {
                     // Extrapolation for supersonic cases
                     (m_fields[j]
                          ->GetBndCondExpansions()[m_bcRegion]
                          ->UpdatePhys())[id1 + i] = Fwd[j][pnt];
                 }
             }
         }
     }
 }

References Nektar::CFSBndCond::m_bcRegion, Nektar::CFSBndCond::m_fields, m_fieldStorage, Nektar::CFSBndCond::m_offset, Nektar::CFSBndCond::m_spacedim, Nektar::CFSBndCond::m_traceNormals, Nektar::CFSBndCond::m_varConv, CG_Iterations::pressure, Vmath::Vabs(), Vmath::Vdiv(), and Vmath::Vvtvp().

Friends And Related Function Documentation

◆ MemoryManager< PressureInflowFileBC >

friend class MemoryManager< PressureInflowFileBC >

friend

Definition at line 1 of file PressureInflowFileBC.h.

Member Data Documentation

◆ className

std::string Nektar::PressureInflowFileBC::className

static

Initial value:

=
    GetCFSBndCondFactory().RegisterCreatorFunction(
        "PressureInflowFile", PressureInflowFileBC::create,
        "Pressure inflow (file) boundary condition.")

Name of the class.

Definition at line 68 of file PressureInflowFileBC.h.

◆ m_fieldStorage

Array<OneD, Array<OneD, NekDouble> > Nektar::PressureInflowFileBC::m_fieldStorage

private

Definition at line 85 of file PressureInflowFileBC.h.

Referenced by PressureInflowFileBC(), and v_Apply().

Static Public Member Functions

Static Public Attributes

Protected Member Functions

Private Member Functions

Private Attributes

Friends

Additional Inherited Members