Nektar::TerminalOutflow Class Reference

A global linear system. More...

#include <TerminalOutflow.h>

Inheritance diagram for Nektar::TerminalOutflow:

Collaboration diagram for Nektar::TerminalOutflow:

Public Member Functions
	TerminalOutflow (Array< OneD, MultiRegions::ExpListSharedPtr > pVessel, const LibUtilities::SessionReaderSharedPtr pSession, PulseWavePressureAreaSharedPtr pressureArea)
virtual	~TerminalOutflow ()
Public Member Functions inherited from Nektar::PulseWaveBoundary
	PulseWaveBoundary (Array< OneD, MultiRegions::ExpListSharedPtr > &pVessel, const LibUtilities::SessionReaderSharedPtr &pSession, PulseWavePressureAreaSharedPtr &pressureArea)
virtual	~PulseWaveBoundary ()
void	DoBoundary (const Array< OneD, const Array< OneD, NekDouble > > &inarray, Array< OneD, Array< OneD, NekDouble > > &A_0, Array< OneD, Array< OneD, NekDouble > > &beta, const NekDouble time, int omega, int offset, int n)

Static Public Member Functions
static PulseWaveBoundarySharedPtr	create (Array< OneD, MultiRegions::ExpListSharedPtr > &pVessel, const LibUtilities::SessionReaderSharedPtr &pSession, PulseWavePressureAreaSharedPtr &pressureArea)
	Creates an instance of this class.

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

Protected Member Functions
virtual void	v_DoBoundary (const Array< OneD, const Array< OneD, NekDouble > > &inarray, Array< OneD, Array< OneD, NekDouble > > &A_0, Array< OneD, Array< OneD, NekDouble > > &beta, const NekDouble time, int omega, int offset, int n)

Additional Inherited Members
Protected Attributes inherited from Nektar::PulseWaveBoundary
Array< OneD, MultiRegions::ExpListSharedPtr >	m_vessels
LibUtilities::SessionReaderSharedPtr	m_session
PulseWavePressureAreaSharedPtr	m_pressureArea
NekDouble	m_pext
NekDouble	m_pout
NekDouble	m_rho

Detailed Description

A global linear system.

Definition at line 51 of file TerminalOutflow.h.

Constructor & Destructor Documentation

Nektar::TerminalOutflow::TerminalOutflow	(	Array< OneD, MultiRegions::ExpListSharedPtr >	pVessel,
		const LibUtilities::SessionReaderSharedPtr	pSession,
		PulseWavePressureAreaSharedPtr	pressureArea
	)

Definition at line 50 of file TerminalOutflow.cpp.

        : PulseWaveBoundary(pVessel,pSession,pressureArea)
    {
    }

Nektar::TerminalOutflow::~TerminalOutflow ( )

virtual

Definition at line 60 of file TerminalOutflow.cpp.

    {

    }

Member Function Documentation

static PulseWaveBoundarySharedPtr Nektar::TerminalOutflow::create ( Array< OneD, MultiRegions::ExpListSharedPtr > &  pVessel, const LibUtilities::SessionReaderSharedPtr &  pSession, PulseWavePressureAreaSharedPtr &  pressureArea  )

inlinestatic

Creates an instance of this class.

Definition at line 55 of file TerminalOutflow.h.

        {
            return MemoryManager<TerminalOutflow>::AllocateSharedPtr(pVessel,pSession,pressureArea);
        }

void Nektar::TerminalOutflow::v_DoBoundary ( const Array< OneD, const Array< OneD, NekDouble > > &  inarray, Array< OneD, Array< OneD, NekDouble > > &  A_0, Array< OneD, Array< OneD, NekDouble > > &  beta, const NekDouble  time, int  omega, int  offset, int  n  )

protectedvirtual

Implements Nektar::PulseWaveBoundary.

Definition at line 65 of file TerminalOutflow.cpp.

References ASSERTL0, Nektar::PulseWaveBoundary::m_rho, and Nektar::PulseWaveBoundary::m_vessels.

    { 
    NekDouble A_r, u_r;
        NekDouble RT, A_l, u_l, u_0, c_0, c_l;

        Array<OneD, MultiRegions::ExpListSharedPtr> vessel(2);

        vessel[0] = m_vessels[2*omega];
        vessel[1] = m_vessels[2*omega+1];

        /* Find the terminal resistance boundary condition and
         * calculate the reflection. We assume A_r = A_l and
         * apply the reflection in u_r after paper
         * "Computational Modelling of 1D blood flow"*/
                        
        // Note: The R_t value is contained in A in the inputfile
        RT = (vessel[0]->UpdateBndCondExpansion(n))->GetCoeffs()[0];

        ASSERTL0((-1<=RT && RT<=1),
                 "RT must be comprised between -1 and 1");
        int nq = vessel[0]->GetTotPoints(); 
                        
        // Get the left values A_l and u_l needed for Eq. 37
        A_l = inarray[0][offset+nq-1];
        u_l = inarray[1][offset+nq-1];
                        
        // Get the values at initial state u_0, c_0
        u_0 = 0.0; //for all vessels start from initial condition 0
        c_0 = sqrt(beta[omega][nq-1]/(2*m_rho))*sqrt(sqrt(A_0[omega][nq-1]));   
                        
        // Calculate the boundary values
        A_r = A_l;
        c_l = sqrt(beta[omega][nq-1]/(2*m_rho))*sqrt(sqrt(A_l));
        u_r = (1-RT)*((u_l-u_0) + 4*(c_l-c_0)) - u_l;
                        
        // Store the new values in the boundary condition
        (vessel[0]->UpdateBndCondExpansion(n))->UpdatePhys()[0] = A_r;
        (vessel[1]->UpdateBndCondExpansion(n))->UpdatePhys()[0] = u_r;
    }

Member Data Documentation

std::string Nektar::TerminalOutflow::className

static

Initial value:

 GetBoundaryFactory().RegisterCreatorFunction(
        "Terminal",
        TerminalOutflow::create,
        "Terminal outflow boundary condition")

Name of class.

Definition at line 63 of file TerminalOutflow.h.