Class used to calculate the ORR current density and coverages (if provided in the kinetic model) by the catalyst layer. More...

#include <response_current_density.h>

Inheritance diagram for FuelCellShop::PostProcessing::ORRCurrentDensityResponse< dim >:

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Collaboration diagram for FuelCellShop::PostProcessing::ORRCurrentDensityResponse< dim >:

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Public Member Functions
Constructor, declaration and initialization
	ORRCurrentDensityResponse (const FuelCell::SystemManagement &sm)

	~ORRCurrentDensityResponse ()

void	declare_parameters (ParameterHandler &param) const
	Declare any necessary parameters to compute the functional. More...

void	initialize (ParameterHandler &param)
	Initialize class parameters. More...

Compute functional
double	S_CL
	Surface area. More...

double	V_CL
	Volume. More...

FuelCellShop::Equation::VariableInfo	xi
	VariableInfo structure corresponding to the reactant_molar_fraction. More...

FuelCellShop::Equation::VariableInfo	phiM
	VariableInfo structure corresponding to the electrolyte potential. More...

FuelCellShop::Equation::VariableInfo	phiS
	VariableInfo structure corresponding to the electronic phase potential. More...

std::string	oxygen_density_name
	Set oxygen concentration name. More...

void	compute_responses (const typename DoFApplication< dim >::CellInfo &info, FuelCellShop::Layer::BaseLayer< dim > *const layer, std::map< FuelCellShop::PostProcessing::ResponsesNames, double > &resp) const
	This member function computes the volumetric current density produced inside the electrode due to the oxygen reduction reaction. More...

void	compute_responses (std::vector< FuelCellShop::SolutionVariable > solution_variables, const typename DoFApplication< dim >::CellInfo &info, FuelCellShop::Layer::BaseLayer< dim > *const layer, std::map< FuelCellShop::PostProcessing::ResponsesNames, double > &resp) const
	Routine used in order to compute the response with a modified solution (not the one stored in info) More...

void	set_oxygen_density_name (std::string name)
	For the case of multi-component solvers, we need to specify which one of the variables contains the oxygen concentration, e.g., density_species_1, density_species_2 and so on. More...

Additional Inherited Members
Protected Member Functions inherited from FuelCellShop::PostProcessing::BaseResponse< dim >
	BaseResponse (const FuelCell::SystemManagement &sm)
	Constructor. More...

virtual	~BaseResponse ()
	Destructor. More...

Protected Attributes inherited from FuelCellShop::PostProcessing::BaseResponse< dim >
const FuelCell::SystemManagement *	system_management
	Pointer to system management. More...

Detailed Description

template<int dim>
class FuelCellShop::PostProcessing::ORRCurrentDensityResponse< dim >

Class used to calculate the ORR current density and coverages (if provided in the kinetic model) by the catalyst layer.

Since the surface area and volume of the catalyst layer is not known, the layer return the total current density produced, i.e.

$\int_{V_{el}} i dV_{el}$

and the sum of all coverages at the element, i.e.

$\int_{V_{el}} \theta_i dV_{el}$

In order for the class to provide current density and average coverage, the returned quantity has to be divided by surface area and catalyst layer volume respectively. If the surface area and volume are known at the input file, they can be specified and the quantities will automatically be corrected.

Note that this class will only work if an object of type CatalystLayer is passed as an argument.

Author: M. Secanell, 2014

Constructor & Destructor Documentation

template<int dim>

FuelCellShop::PostProcessing::ORRCurrentDensityResponse< dim >::ORRCurrentDensityResponse ( const FuelCell::SystemManagement & sm )

inline

template<int dim>

FuelCellShop::PostProcessing::ORRCurrentDensityResponse< dim >::~ORRCurrentDensityResponse ( )

inline

Member Function Documentation

template<int dim>

void FuelCellShop::PostProcessing::ORRCurrentDensityResponse< dim >::compute_responses	(	const typename DoFApplication< dim >::CellInfo &	info,
		FuelCellShop::Layer::BaseLayer< dim > *const	layer,
		std::map< FuelCellShop::PostProcessing::ResponsesNames, double > &	resp
	)		const

virtual

This member function computes the volumetric current density produced inside the electrode due to the oxygen reduction reaction.

In order to compute the current density, the following functional is evaluated

$I = int_{\Omega} i dV$

In addition, if the catalyst layer uses a kinetic model that provides coverages those values are also provided in the response parameter, i.e., resp.

In order to access the current produced at the electrode use:

* ORR_responses[FuelCellShop::PostProcessing::ResponsesNames::current]

*

The coverages are accessed using FuelCellShop::PostProcessing::ResponsesNames::O_coverage and FuelCellShop::PostProcessing::ResponsesNames::OH_coverage

Implements FuelCellShop::PostProcessing::BaseResponse< dim >.

template<int dim>

void FuelCellShop::PostProcessing::ORRCurrentDensityResponse< dim >::compute_responses	(	std::vector< FuelCellShop::SolutionVariable >	solution_variables,
		const typename DoFApplication< dim >::CellInfo &	info,
		FuelCellShop::Layer::BaseLayer< dim > *const	layer,
		std::map< FuelCellShop::PostProcessing::ResponsesNames, double > &	resp
	)		const

virtual

Routine used in order to compute the response with a modified solution (not the one stored in info)

Implements FuelCellShop::PostProcessing::BaseResponse< dim >.

template<int dim>

void FuelCellShop::PostProcessing::ORRCurrentDensityResponse< dim >::declare_parameters ( ParameterHandler & param ) const

virtual

Declare any necessary parameters to compute the functional.

Reimplemented from FuelCellShop::PostProcessing::BaseResponse< dim >.

template<int dim>

void FuelCellShop::PostProcessing::ORRCurrentDensityResponse< dim >::initialize ( ParameterHandler & param )

virtual

Initialize class parameters.

Reimplemented from FuelCellShop::PostProcessing::BaseResponse< dim >.

template<int dim>

void FuelCellShop::PostProcessing::ORRCurrentDensityResponse< dim >::set_oxygen_density_name ( std::string name )

inline

For the case of multi-component solvers, we need to specify which one of the variables contains the oxygen concentration, e.g., density_species_1, density_species_2 and so on.

Provide this value here.