Analytical solution to an ionomer-filled agglomerate problem in 1D. More...

#include <agglomerate_ionomer_sun.h>

Inheritance diagram for FuelCellShop::MicroScale::IonomerAgglomerateSun:

Collaboration diagram for FuelCellShop::MicroScale::IonomerAgglomerateSun:

Public Member Functions
	IonomerAgglomerateSun ()
	Constructor.

virtual void	set_structure (FuelCellShop::Material::CatalystSupportBase CS, FuelCellShop::Material::CatalystBase Cat, FuelCellShop::Material::PolymerElectrolyteBase *PEM, double A, double r, double delta, double epsilon)
	Set the composition and structure of the agglomerate.

virtual double	compute_current (double &E_r)
	Main function of the class used to compute the current over the whole agglomerate at the local operating conditions.

virtual std::vector< double >	compute_derivative_current ()
	Function to compute the derivative of the current density at the local operating conditions;.

Public Member Functions inherited from FuelCellShop::MicroScale::AgglomerateBase
	AgglomerateBase ()
	Constructor.

virtual	~AgglomerateBase ()
	Destructor.

void	set_kinetics (FuelCellShop::Kinetics::BaseKinetics *kin)

void	set_solution (const std::map< VariableNames, SolutionVariable > &, const VariableNames &, const int &)
	Function for setting the solution variables (reactant concentration, phi_s, phi_m, etc) before we compute current.

void	set_P (double P_Tot)
	Set the pressure for the agglomerate.

void	set_T (double Temp)
	Set the temperature for the agglomerate.

void	setLoadingWeigths (std::vector< double > weigths)

void	set_conductivity_factor (double temp)

bool	analytical_derivatives ()

void	load_initial_guess (std::vector< std::vector< double >> IC)

bool	guess_not_loaded ()

void	deep_copy_pointers ()

Private Member Functions
void	_initialize ()

double	compute_Er (const double k_c, const double D)
	Function to compute the effectiveness of the agglomerate core.

double	compute_dEr (const double k_c, const double dk_c, const double D)
	Function to compute the derivative of the effectiveness of the agglomerate core.

Additional Inherited Members
Public Attributes inherited from FuelCellShop::MicroScale::AgglomerateBase
std::vector< std::vector < double > >	results

std::vector< std::string >	column_titles

Protected Member Functions inherited from FuelCellShop::MicroScale::AgglomerateBase
void	setAV (double newAV)

double	getAV (double location)

void	setUpLoadings ()

void	interpolate_initial_data (double z[], double &x, double left_pos, double right_pos, std::vector< double > left_data, std::vector< double > right_data)

bool	use_initial_data (double z[], double &x)

Protected Attributes inherited from FuelCellShop::MicroScale::AgglomerateBase
double	permittivity_0

double	pi

double	F

double	R

double	P

double	T

std::vector< double >	loadingWeigths

std::vector< double >	actualLoadings

std::vector< double >	loadingRadii

double	AV

double	maxRadialDimension

bool	IC_loaded

bool	analyticalDerivatives
	Variable to check if analytical derivatives are implemented.

FuelCellShop::Material::CatalystSupportBase *	catalyst_support
	Object used to calculate the carbon black conductivity in the catalyst layer.

FuelCellShop::Material::CatalystBase *	catalyst
	Object used to store the properties of the catalyst used in the layer.

FuelCellShop::Material::PolymerElectrolyteBase *	electrolyte
	Object used to calculate the properties of the electrolyte in the catalyst layer.

FuelCellShop::Kinetics::BaseKinetics *	kinetics
	Create the kinetics object.

std::vector< double >	co2_final
	Vector storing the oxygen concentration profile across the agglomerate.

std::vector< double >	mesh_final
	Vector storing the location of the nodes of the mesh used in the numerical agglomerate.

double	cond_factor
	Used to modify the proton conductivity in agglomerate.

double	r_agg
	Radius of the agglomerate.

double	delta_agg
	Thickness of the ionomer thin film.

double	epsilon_agg
	Thickness of the ionomer thin film.

double	c_R
	Concentration of oxygen at the boundary.

double	phi_M
	Electrolyte (Membrane) phase potential at the boundary.

double	phi_S
	Solid phase potential through the agglomerate.

double	interface
	Value of the boundary between the thin film and agglomerate domain.

double	D_R_N
	Oxygen Diffusion.

double	H_R_N
	Henry's Constant.

double	R_tol
	absolute tolerance in reactant concentration

std::vector< VariableNames >	sol_names

std::map< VariableNames, SolutionVariable >	solutions

VariableNames	reactant

int	sol_index

std::vector< std::vector < double > >	initial_data

Detailed Description

Analytical solution to an ionomer-filled agglomerate problem in 1D.

Adapted from Source: W. Sun, B. A. Peppley, K. Karan, An improved two-dimensional agglomerate cathode model to study the influence of catalyst layer structural parameters, Electrochimica Acta 50 (16-17) (2005) 3347–3358.

Constructor & Destructor Documentation

FuelCellShop::MicroScale::IonomerAgglomerateSun::IonomerAgglomerateSun ( )

Constructor.

Member Function Documentation

void FuelCellShop::MicroScale::IonomerAgglomerateSun::_initialize ( )

private

virtual double FuelCellShop::MicroScale::IonomerAgglomerateSun::compute_current ( double & E_r )

virtual

Main function of the class used to compute the current over the whole agglomerate at the local operating conditions.

Implements FuelCellShop::MicroScale::AgglomerateBase.

double FuelCellShop::MicroScale::IonomerAgglomerateSun::compute_dEr	(	const double	k_c,
		const double	dk_c,
		const double	D
	)

private

Function to compute the derivative of the effectiveness of the agglomerate core.

virtual std::vector<double> FuelCellShop::MicroScale::IonomerAgglomerateSun::compute_derivative_current ( )

virtual

Function to compute the derivative of the current density at the local operating conditions;.

Reimplemented from FuelCellShop::MicroScale::AgglomerateBase.

double FuelCellShop::MicroScale::IonomerAgglomerateSun::compute_Er	(	const double	k_c,
		const double	D
	)

private

Function to compute the effectiveness of the agglomerate core.

virtual void FuelCellShop::MicroScale::IonomerAgglomerateSun::set_structure	(	FuelCellShop::Material::CatalystSupportBase *	CS,
		FuelCellShop::Material::CatalystBase *	Cat,
		FuelCellShop::Material::PolymerElectrolyteBase *	PEM,
		double	A,
		double	r,
		double	delta,
		double	epsilon
	)

virtual

Set the composition and structure of the agglomerate.

Implements FuelCellShop::MicroScale::AgglomerateBase.

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

agglomerate_ionomer_sun.h

Public Member Functions

Private Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation