Class where it is implemented a reduced problem for the steady turbulent Navier-stokes problem. More...

#include <ReducedSteadyNSTurb.H>

Inheritance diagram for ReducedSteadyNSTurb:

Public Member Functions
	ReducedSteadyNSTurb ()
	Construct Null.

	ReducedSteadyNSTurb (SteadyNSTurb &problem)
	Construct Null.

	~ReducedSteadyNSTurb ()

void	solveOnlineSUP (Eigen::MatrixXd velNow)
	Method to perform an online solve using a supremizer stabilisation method.

void	solveOnlinePPE (Eigen::MatrixXd velNow)
	Method to perform an online solve using a PPE stabilisation method.

void	reconstruct (bool exportFields=false, fileName folder="./ITHACAoutput/online_rec", int printevery=1)
	Method to reconstruct the solutions from an online solve.

Eigen::MatrixXd	setOnlineVelocity (Eigen::MatrixXd vel)
	Sets the online velocity.

Public Member Functions inherited from reducedSteadyNS
	reducedSteadyNS ()
	Construct Null.

	reducedSteadyNS (steadyNS &problem)
	Construct Null.

	~reducedSteadyNS ()

void	solveOnline_PPE (Eigen::MatrixXd vel_now)
	Method to perform an online solve using a PPE stabilisation method.

void	solveOnline_sup (Eigen::MatrixXd vel_now)
	Method to perform an online solve using a supremizer stabilisation method.

void	reconstruct_PPE (fileName folder="./ITHACAoutput/online_rec", int printevery=1)
	Method to reconstruct a solution from an online solve with a PPE stabilisation technique.

void	reconstruct (bool exportFields=false, fileName folder="./ITHACAoutput/online_rec", int printevery=1)
	Method to reconstruct the solutions from an online solve.

void	reconstructLiftAndDrag (steadyNS &problem, fileName folder)
	Method to compute the reduced order forces.

double	inf_sup_constant ()
	Method to evaluate the online inf-sup constant.

Eigen::MatrixXd	setOnlineVelocity (Eigen::MatrixXd vel)
	Sets the online velocity.

Public Member Functions inherited from reducedProblem
	reducedProblem ()
	Construct Null.

virtual	~reducedProblem ()

	reducedProblem (reductionProblem &problem)
	Construct with reduced Problem.

virtual void	solveOnline ()
	Virtual Method to perform and online Solve.

Public Attributes
PtrList< volScalarField >	nutFields
	List of snapshots for the solution for eddy viscosity.

PtrList< volScalarField >	nutModes
	List of POD modes for eddy viscosity.

Eigen::MatrixXd	rbfCoeffMat
	The matrix of the eddy viscosity RBF interoplated coefficients.

Eigen::VectorXd	rbfCoeff
	Vector of eddy viscosity RBF interoplated coefficients.

int	nphiNut
	Number of viscosity modes.

newtonSteadyNSTurbSUP	newtonObjectSUP
	Newton Object to solve the nonlinear problem sup approach.

newtonSteadyNSTurbPPE	newtonObjectPPE
	Newton Object to solve the nonlinear problem PPE approach.

SteadyNSTurb *	problem
	Pointer to the FOM problem.

PtrList< volScalarField >	nutRecFields
	Reconstructed eddy viscosity fields list.

Public Attributes inherited from reducedSteadyNS
ITHACAparameters *	para
	parameters to be read from the ITHACAdict file

Eigen::MatrixXd	vel_now
	Online inlet velocity vector.

Eigen::MatrixXd	fTau
	Reduced matrix for tangent forces.

Eigen::MatrixXd	fN
	Reduced matrix for normal forces.

Eigen::VectorXd	y_old
	Vector to store the previous solution during the Newton procedure.

Eigen::VectorXd	y
	Vector to store the solution during the Newton procedure.

scalar	nu
	Reduced viscosity in case of parametrized viscosity.

List< Eigen::MatrixXd >	online_solution
	List of Eigen matrices to store the online solution.

PtrList< volVectorField >	Umodes
	List of pointers to store the modes for velocity.

PtrList< volScalarField >	Pmodes
	List of pointers to store the modes for pressure.

PtrList< volVectorField >	Usnapshots
	List of pointers to store the snapshots for velocity.

PtrList< volScalarField >	Psnapshots
	List of pointers to store the snapshots for pressure.

PtrList< volScalarField >	PREC
	Reconstructed pressure field.

PtrList< volVectorField >	UREC
	Recontructed velocity field.

PtrList< volScalarField >	pRecFields
	Reconstructed pressure fields list.

PtrList< volVectorField >	uRecFields
	Recontructed velocity fields list.

newton_steadyNS	newton_object
	Newton object used to solve the non linear problem.

steadyNS *	problem
	Pointer to the FOM problem.

int	Nphi_u
	Number of velocity modes.

int	Nphi_p
	Number of pressure modes.

int	Nphi_sup
	Number of supremizer modes.

int	N_BC
	Number of parametrized boundary conditions.

int	count_online_solve = 1
	Counter to count the online solutions.

Eigen::MatrixXd	tauU
	Penalty Factor.

Public Attributes inherited from reducedProblem
scalar	nu
	Viscosity.

reductionProblem *	problem
	Pointer to FOAM problem.

Additional Inherited Members
Static Public Member Functions inherited from reducedProblem
static Eigen::MatrixXd	solveLinearSys (List< Eigen::MatrixXd > LinSys, Eigen::MatrixXd x, Eigen::VectorXd &residual, const Eigen::MatrixXd &bc=Eigen::MatrixXd::Zero(0, 0), const std::string solverType="fullPivLu")
	Linear system solver for the online problem.

static Eigen::MatrixXd	solveLinearSys (List< Eigen::MatrixXd > LinSys, Eigen::MatrixXd x, Eigen::VectorXd &residual, const std::string solverType)
	Linear system solver for the online problem.

Detailed Description

Class where it is implemented a reduced problem for the steady turbulent Navier-stokes problem.

In this class are implemented the methods to solve a reduced version of the stationary turbulent Navier-stokes equations. This class must be used together with the steadyNS class

Examples: 06POD_RBF.C.

Definition at line 120 of file ReducedSteadyNSTurb.H.

Constructor & Destructor Documentation

◆ ReducedSteadyNSTurb() [1/2]

ReducedSteadyNSTurb::ReducedSteadyNSTurb ( )

Construct Null.

Definition at line 36 of file ReducedSteadyNSTurb.C.

◆ ReducedSteadyNSTurb() [2/2]

ReducedSteadyNSTurb::ReducedSteadyNSTurb ( SteadyNSTurb & problem )

Construct Null.

Parameters

problem a full order SteadyNSTurb problem

Definition at line 40 of file ReducedSteadyNSTurb.C.

◆ ~ReducedSteadyNSTurb()

ReducedSteadyNSTurb::~ReducedSteadyNSTurb ( )

inline

Definition at line 134 of file ReducedSteadyNSTurb.H.

Member Function Documentation

◆ reconstruct()

void ReducedSteadyNSTurb::reconstruct	(	bool	exportFields = false,
		fileName	folder = "./ITHACAoutput/online_rec",
		int	printevery = 1 )

Method to reconstruct the solutions from an online solve.

Parameters

[in]	exportFields	A boolean variable which determines whether to export fields or not
[in]	folder	The folder where to output the solutions in case on wants to
[in]	printevery	The printevery variabel, when it is 1 the function outputs all stored fields

Definition at line 370 of file ReducedSteadyNSTurb.C.

◆ setOnlineVelocity()

Eigen::MatrixXd ReducedSteadyNSTurb::setOnlineVelocity ( Eigen::MatrixXd vel )

Sets the online velocity.

Parameters

[in] vel The velocity

Returns: The rescaled velocity vector

Definition at line 425 of file ReducedSteadyNSTurb.C.

◆ solveOnlinePPE()

void ReducedSteadyNSTurb::solveOnlinePPE ( Eigen::MatrixXd velNow )

Method to perform an online solve using a PPE stabilisation method.

Parameters

[in] velNow The vector of online velocity. It is defined in with an Eigen::MatrixXd and must have one col and as many rows as the number of parametrized boundary conditions.

Definition at line 291 of file ReducedSteadyNSTurb.C.

◆ solveOnlineSUP()

void ReducedSteadyNSTurb::solveOnlineSUP ( Eigen::MatrixXd velNow )

Method to perform an online solve using a supremizer stabilisation method.

Parameters

[in]	velNow	The vector of online velocity. It is defined in with an Eigen::MatrixXd and must have one col and as many rows as the number of parametrized boundary conditions.
[in]	startSnap	The first snapshot taken from the offline snahpshots and used to get the reduced initial condition.

Definition at line 212 of file ReducedSteadyNSTurb.C.

Member Data Documentation

◆ newtonObjectPPE

newtonSteadyNSTurbPPE ReducedSteadyNSTurb::newtonObjectPPE

Newton Object to solve the nonlinear problem PPE approach.

Definition at line 156 of file ReducedSteadyNSTurb.H.

◆ newtonObjectSUP

newtonSteadyNSTurbSUP ReducedSteadyNSTurb::newtonObjectSUP

Newton Object to solve the nonlinear problem sup approach.

Definition at line 153 of file ReducedSteadyNSTurb.H.

◆ nphiNut

int ReducedSteadyNSTurb::nphiNut

Number of viscosity modes.

Definition at line 150 of file ReducedSteadyNSTurb.H.

◆ nutFields

PtrList<volScalarField> ReducedSteadyNSTurb::nutFields

List of snapshots for the solution for eddy viscosity.

Definition at line 138 of file ReducedSteadyNSTurb.H.

◆ nutModes

PtrList<volScalarField> ReducedSteadyNSTurb::nutModes

List of POD modes for eddy viscosity.

Definition at line 141 of file ReducedSteadyNSTurb.H.

◆ nutRecFields

PtrList<volScalarField> ReducedSteadyNSTurb::nutRecFields

Reconstructed eddy viscosity fields list.

Definition at line 162 of file ReducedSteadyNSTurb.H.

◆ problem

SteadyNSTurb* ReducedSteadyNSTurb::problem

Pointer to the FOM problem.

Definition at line 159 of file ReducedSteadyNSTurb.H.

◆ rbfCoeff

Eigen::VectorXd ReducedSteadyNSTurb::rbfCoeff

Vector of eddy viscosity RBF interoplated coefficients.

Definition at line 147 of file ReducedSteadyNSTurb.H.

◆ rbfCoeffMat

Eigen::MatrixXd ReducedSteadyNSTurb::rbfCoeffMat

The matrix of the eddy viscosity RBF interoplated coefficients.

Definition at line 144 of file ReducedSteadyNSTurb.H.

The documentation for this class was generated from the following files:

/github/workspace/src/ITHACA_ROMPROBLEMS/ReducedSteadyNSTurb/ReducedSteadyNSTurb.H
/github/workspace/src/ITHACA_ROMPROBLEMS/ReducedSteadyNSTurb/ReducedSteadyNSTurb.C

Public Member Functions

Public Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ReducedSteadyNSTurb() [1/2]

◆ ReducedSteadyNSTurb() [2/2]

◆ ~ReducedSteadyNSTurb()

Member Function Documentation

◆ reconstruct()

◆ setOnlineVelocity()

◆ solveOnlinePPE()

◆ solveOnlineSUP()

Member Data Documentation

◆ newtonObjectPPE

◆ newtonObjectSUP

◆ nphiNut

◆ nutFields

◆ nutModes

◆ nutRecFields

◆ problem

◆ rbfCoeff

◆ rbfCoeffMat