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

#include <ReducedSteadyNSTurbIntrusive.H>

Inheritance diagram for ReducedSteadyNSTurbIntrusive:

Public Member Functions
	ReducedSteadyNSTurbIntrusive ()
	Construct Null.

	ReducedSteadyNSTurbIntrusive (SteadyNSTurbIntrusive &problem)
	Construct Null.

	~ReducedSteadyNSTurbIntrusive ()

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

void	reconstruct (fileName folder="./ITHACAOutput/online_rec", int printEvery=1)
	Method to reconstruct the solutions from an online solve with a supremizer stabilisation technique.

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

void	reconstructLiftAndDrag (SteadyNSTurbIntrusive &problem, fileName folder)
	Method to compute the reduced order forces for same number of modes of velocity and pressure.

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.

PtrList< volScalarField >	nutRec
	Reconstructed eddy viscosity field.

int	nphiNut
	Number of viscosity modes.

newtonSteadyNSTurbIntrusive	newtonObject
	Newton Object to solve the nonlinear problem.

SteadyNSTurbIntrusive *	problem
	Pointer to the FOM problem.

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

Definition at line 83 of file ReducedSteadyNSTurbIntrusive.H.

Constructor & Destructor Documentation

◆ ReducedSteadyNSTurbIntrusive() [1/2]

ReducedSteadyNSTurbIntrusive::ReducedSteadyNSTurbIntrusive ( )

Construct Null.

Definition at line 36 of file ReducedSteadyNSTurbIntrusive.C.

◆ ReducedSteadyNSTurbIntrusive() [2/2]

ReducedSteadyNSTurbIntrusive::ReducedSteadyNSTurbIntrusive ( SteadyNSTurbIntrusive & problem )

Construct Null.

Parameters

problem a full order SteadyNSTurb problem

Definition at line 40 of file ReducedSteadyNSTurbIntrusive.C.

◆ ~ReducedSteadyNSTurbIntrusive()

ReducedSteadyNSTurbIntrusive::~ReducedSteadyNSTurbIntrusive ( )

inline

Definition at line 97 of file ReducedSteadyNSTurbIntrusive.H.

Member Function Documentation

◆ reconstruct()

void ReducedSteadyNSTurbIntrusive::reconstruct	(	fileName	folder = "./ITHACAOutput/online_rec",
		int	printEvery = 1 )

Method to reconstruct the solutions from an online solve with a supremizer stabilisation technique.

stabilisation method

Parameters

[in]	folder	The folder where to output the solutions
[in]	printEvery	The printEvery

Definition at line 174 of file ReducedSteadyNSTurbIntrusive.C.

◆ reconstructLiftAndDrag()

void ReducedSteadyNSTurbIntrusive::reconstructLiftAndDrag	(	SteadyNSTurbIntrusive &	problem,
		fileName	folder )

Method to compute the reduced order forces for same number of modes of velocity and pressure.

Parameters

	problem	A SteadyNSTurbIntrusive full order problem.
[in]	folder	The folder where to output the forces matrices

Definition at line 230 of file ReducedSteadyNSTurbIntrusive.C.

◆ setOnlineVelocity()

Eigen::MatrixXd ReducedSteadyNSTurbIntrusive::setOnlineVelocity ( Eigen::MatrixXd vel )

Sets the online velocity.

Parameters

[in] vel The velocity

Returns: The rescaled velocity vector

Definition at line 209 of file ReducedSteadyNSTurbIntrusive.C.

◆ solveOnline()

void ReducedSteadyNSTurbIntrusive::solveOnline ( 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 116 of file ReducedSteadyNSTurbIntrusive.C.

Member Data Documentation

◆ newtonObject

newtonSteadyNSTurbIntrusive ReducedSteadyNSTurbIntrusive::newtonObject

Newton Object to solve the nonlinear problem.

Definition at line 113 of file ReducedSteadyNSTurbIntrusive.H.

◆ nphiNut

int ReducedSteadyNSTurbIntrusive::nphiNut

Number of viscosity modes.

Definition at line 110 of file ReducedSteadyNSTurbIntrusive.H.

◆ nutFields

PtrList<volScalarField> ReducedSteadyNSTurbIntrusive::nutFields

List of snapshots for the solution for eddy viscosity.

Definition at line 101 of file ReducedSteadyNSTurbIntrusive.H.

◆ nutModes

PtrList<volScalarField> ReducedSteadyNSTurbIntrusive::nutModes

List of POD modes for eddy viscosity.

Definition at line 104 of file ReducedSteadyNSTurbIntrusive.H.

◆ nutRec

PtrList<volScalarField> ReducedSteadyNSTurbIntrusive::nutRec

Reconstructed eddy viscosity field.

Definition at line 107 of file ReducedSteadyNSTurbIntrusive.H.

◆ problem

SteadyNSTurbIntrusive* ReducedSteadyNSTurbIntrusive::problem

Pointer to the FOM problem.

Definition at line 116 of file ReducedSteadyNSTurbIntrusive.H.

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

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

Public Member Functions

Public Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ReducedSteadyNSTurbIntrusive() [1/2]

◆ ReducedSteadyNSTurbIntrusive() [2/2]

◆ ~ReducedSteadyNSTurbIntrusive()

Member Function Documentation

◆ reconstruct()

◆ reconstructLiftAndDrag()

◆ setOnlineVelocity()

◆ solveOnline()

Member Data Documentation

◆ newtonObject

◆ nphiNut

◆ nutFields

◆ nutModes

◆ nutRec

◆ problem