SimplifiedArgonChemistryCoefficients

Rate and Townsend coefficients for a simplified argon chemistry network (includes elastic collision, ionization, and excitation).

Overview

SimplifiedArgonChemistryCoefficients defines the coefficients for a simplified argon chemistry network. This includes both rate and Townsend coefficients, and threshold energies. The following are the properties and naming scheme that SimplifiedArgonChemistryCoefficients provides:

  • rate coefficients for elastic collision, ionization, and excitation, labeled as kel, kiz, and kex,

  • Townsend coefficients for elastic collision, ionization, and excitation, labeled as alpha_el, alpha_iz, and alpha_ex, and

  • threshold energy for ionization and excitation, labeled as Eiz and Eex,

In addition to the argon chemistry, SimplifiedArgonChemistryCoefficients also defines the following:

  • argon mass, labeled as massGas, and

  • neutral argon gas density, labeled as n_gas.

commentnote:Citation

The coefficients used in this object can be found in the following:

Example Input File Syntax

[Materials<<<{"href": "../../syntax/Materials/index.html"}>>>]
  [gas_block]
    type = SimplifiedArgonChemistryCoefficients<<<{"description": "Rate and Townsend coefficients for a simplified argon chemistry network (includes elastic collision, ionization, and excitation).", "href": "SimplifiedArgonChemistryCoefficients.html"}>>>
    interp_elastic_coeff<<<{"description": "Whether to interpolate the elastic collision townsend coefficient as a function of the mean energy. If false, coeffs are constant."}>>> = true
    em<<<{"description": "Species concentration needed to calculate the poisson source"}>>> = em
    mean_en<<<{"description": "The electron mean energy in log form."}>>> = mean_en
    block<<<{"description": "The list of blocks (ids or names) that this object will be applied"}>>> = 0
    property_tables_file<<<{"description": "The file containing interpolation tables for material properties."}>>> = td_argon_chemistry.txt
  []
[]
(test/tests/1d_dc/mean_en_multi.i)

Input Parameters

  • interp_elastic_coeffFalseWhether to interpolate the elastic collision townsend coefficient as a function of the mean energy. If false, coeffs are constant.

    Default:False

    C++ Type:bool

    Controllable:No

    Description:Whether to interpolate the elastic collision townsend coefficient as a function of the mean energy. If false, coeffs are constant.

  • property_tables_fileThe file containing interpolation tables for material properties.

    C++ Type:FileName

    Controllable:No

    Description:The file containing interpolation tables for material properties.

  • use_molesFalseWhether to use units of moles as opposed to # of molecules.

    Default:False

    C++ Type:bool

    Controllable:No

    Description:Whether to use units of moles as opposed to # of molecules.

Required Parameters

  • blockThe list of blocks (ids or names) that this object will be applied

    C++ Type:std::vector<SubdomainName>

    Controllable:No

    Description:The list of blocks (ids or names) that this object will be applied

  • boundaryThe list of boundaries (ids or names) from the mesh where this object applies

    C++ Type:std::vector<BoundaryName>

    Controllable:No

    Description:The list of boundaries (ids or names) from the mesh where this object applies

  • computeTrueWhen false, MOOSE will not call compute methods on this material. The user must call computeProperties() after retrieving the MaterialBase via MaterialBasePropertyInterface::getMaterialBase(). Non-computed MaterialBases are not sorted for dependencies.

    Default:True

    C++ Type:bool

    Controllable:No

    Description:When false, MOOSE will not call compute methods on this material. The user must call computeProperties() after retrieving the MaterialBase via MaterialBasePropertyInterface::getMaterialBase(). Non-computed MaterialBases are not sorted for dependencies.

  • constant_onNONEWhen ELEMENT, MOOSE will only call computeQpProperties() for the 0th quadrature point, and then copy that value to the other qps.When SUBDOMAIN, MOOSE will only call computeQpProperties() for the 0th quadrature point, and then copy that value to the other qps. Evaluations on element qps will be skipped

    Default:NONE

    C++ Type:MooseEnum

    Options:NONE, ELEMENT, SUBDOMAIN

    Controllable:No

    Description:When ELEMENT, MOOSE will only call computeQpProperties() for the 0th quadrature point, and then copy that value to the other qps.When SUBDOMAIN, MOOSE will only call computeQpProperties() for the 0th quadrature point, and then copy that value to the other qps. Evaluations on element qps will be skipped

  • declare_suffixAn optional suffix parameter that can be appended to any declared properties. The suffix will be prepended with a '_' character.

    C++ Type:MaterialPropertyName

    Unit:(no unit assumed)

    Controllable:No

    Description:An optional suffix parameter that can be appended to any declared properties. The suffix will be prepended with a '_' character.

  • emSpecies concentration needed to calculate the poisson source

    C++ Type:std::vector<VariableName>

    Unit:(no unit assumed)

    Controllable:No

    Description:Species concentration needed to calculate the poisson source

  • mean_enThe electron mean energy in log form.

    C++ Type:std::vector<VariableName>

    Unit:(no unit assumed)

    Controllable:No

    Description:The electron mean energy in log form.

  • user_T_gas300The gas temperature in Kelvin.

    Default:300

    C++ Type:double

    Unit:(no unit assumed)

    Controllable:No

    Description:The gas temperature in Kelvin.

  • user_p_gas101000The gas pressure in Pascals.

    Default:101000

    C++ Type:double

    Unit:(no unit assumed)

    Controllable:No

    Description:The gas pressure in Pascals.

Optional Parameters

  • control_tagsAdds user-defined labels for accessing object parameters via control logic.

    C++ Type:std::vector<std::string>

    Controllable:No

    Description:Adds user-defined labels for accessing object parameters via control logic.

  • enableTrueSet the enabled status of the MooseObject.

    Default:True

    C++ Type:bool

    Controllable:Yes

    Description:Set the enabled status of the MooseObject.

  • implicitTrueDetermines whether this object is calculated using an implicit or explicit form

    Default:True

    C++ Type:bool

    Controllable:No

    Description:Determines whether this object is calculated using an implicit or explicit form

  • search_methodnearest_node_connected_sidesChoice of search algorithm. All options begin by finding the nearest node in the primary boundary to a query point in the secondary boundary. In the default nearest_node_connected_sides algorithm, primary boundary elements are searched iff that nearest node is one of their nodes. This is fast to determine via a pregenerated node-to-elem map and is robust on conforming meshes. In the optional all_proximate_sides algorithm, primary boundary elements are searched iff they touch that nearest node, even if they are not topologically connected to it. This is more CPU-intensive but is necessary for robustness on any boundary surfaces which has disconnections (such as Flex IGA meshes) or non-conformity (such as hanging nodes in adaptively h-refined meshes).

    Default:nearest_node_connected_sides

    C++ Type:MooseEnum

    Options:nearest_node_connected_sides, all_proximate_sides

    Controllable:No

    Description:Choice of search algorithm. All options begin by finding the nearest node in the primary boundary to a query point in the secondary boundary. In the default nearest_node_connected_sides algorithm, primary boundary elements are searched iff that nearest node is one of their nodes. This is fast to determine via a pregenerated node-to-elem map and is robust on conforming meshes. In the optional all_proximate_sides algorithm, primary boundary elements are searched iff they touch that nearest node, even if they are not topologically connected to it. This is more CPU-intensive but is necessary for robustness on any boundary surfaces which has disconnections (such as Flex IGA meshes) or non-conformity (such as hanging nodes in adaptively h-refined meshes).

  • seed0The seed for the master random number generator

    Default:0

    C++ Type:unsigned int

    Controllable:No

    Description:The seed for the master random number generator

  • use_displaced_meshFalseWhether or not this object should use the displaced mesh for computation. Note that in the case this is true but no displacements are provided in the Mesh block the undisplaced mesh will still be used.

    Default:False

    C++ Type:bool

    Controllable:No

    Description:Whether or not this object should use the displaced mesh for computation. Note that in the case this is true but no displacements are provided in the Mesh block the undisplaced mesh will still be used.

Advanced Parameters

  • output_propertiesList of material properties, from this material, to output (outputs must also be defined to an output type)

    C++ Type:std::vector<std::string>

    Controllable:No

    Description:List of material properties, from this material, to output (outputs must also be defined to an output type)

  • outputsnone Vector of output names where you would like to restrict the output of variables(s) associated with this object

    Default:none

    C++ Type:std::vector<OutputName>

    Controllable:No

    Description:Vector of output names where you would like to restrict the output of variables(s) associated with this object

Outputs Parameters

  • prop_getter_suffixAn optional suffix parameter that can be appended to any attempt to retrieve/get material properties. The suffix will be prepended with a '_' character.

    C++ Type:MaterialPropertyName

    Unit:(no unit assumed)

    Controllable:No

    Description:An optional suffix parameter that can be appended to any attempt to retrieve/get material properties. The suffix will be prepended with a '_' character.

  • use_interpolated_stateFalseFor the old and older state use projected material properties interpolated at the quadrature points. To set up projection use the ProjectedStatefulMaterialStorageAction.

    Default:False

    C++ Type:bool

    Controllable:No

    Description:For the old and older state use projected material properties interpolated at the quadrature points. To set up projection use the ProjectedStatefulMaterialStorageAction.

Material Property Retrieval Parameters

Input Files

References

  1. Michael A Lieberman and Allan J Lichtenberg. Principles of plasma discharges and materials processing. MRS Bulletin, 30(12):899–901, 1994.[BibTeX]