NitrogenFluidProperties

Fluid properties for Nitrogen (N2)

Fluid properties for nitrogen are mainly calculated using the Span et al. equation of state (Span et al., 2000). This formulation uses density and temperature as the primary variables with which to calculate properties such as density, enthalpy and internal energy.

When used with the pressure and temperature interface, which is the case in the Porous Flow module, nitrogen properties are typically calculated by first calculating density iteratively for a given pressure and temperature. This density is then used to calculate the other properties, such as internal energy, directly.

Viscosity and thermal conductivity are calculated using the formulation presented in Lemmon and Jacobsen (2004).

Dissolution of nitrogen into water is calculated using Henry's law (IAPWS, 2004).

Properties of nitrogen

Property	value
Molar mass	0.02801348 kg/mol
Critical temperature	126.192 K
Critical pressure	3.3958 MPa
Critical density	313.3 kg/m $var element = document.getElementById("moose-equation-ccd1af0f-a2c7-4fd7-ac5c-e2b6753c31a1");katex.render("^3", element, {displayMode:false,throwOnError:false});$
Triple point temperature	63.151 K
Triple point pressure	12.523 kPa

Range of validity

The NitrogenFluidProperties UserObject is valid for:

63.151 K $var element = document.getElementById("moose-equation-6912547d-60b2-4981-97fc-f7c9278cfc7d");katex.render("\\le", element, {displayMode:false,throwOnError:false});$ T $var element = document.getElementById("moose-equation-b65006d2-daf4-48d8-a4a5-27778f14e99e");katex.render("\\le", element, {displayMode:false,throwOnError:false});$ 1000 K for p $var element = document.getElementById("moose-equation-a18861d3-72f7-43ae-a6ed-5ba183c8a71f");katex.render("\\le", element, {displayMode:false,throwOnError:false});$ 2200 MPa

Input Parameters

execute_onTIMESTEP_ENDThe list of flag(s) indicating when this object should be executed, the available options include NONE, INITIAL, LINEAR, NONLINEAR, POSTCHECK, TIMESTEP_END, TIMESTEP_BEGIN, MULTIAPP_FIXED_POINT_END, MULTIAPP_FIXED_POINT_BEGIN, FINAL, CUSTOM.
Default:TIMESTEP_END
C++ Type:ExecFlagEnum
Options:NONE, INITIAL, LINEAR, NONLINEAR, POSTCHECK, TIMESTEP_END, TIMESTEP_BEGIN, MULTIAPP_FIXED_POINT_END, MULTIAPP_FIXED_POINT_BEGIN, FINAL, CUSTOM
Controllable:No
Description:The list of flag(s) indicating when this object should be executed, the available options include NONE, INITIAL, LINEAR, NONLINEAR, POSTCHECK, TIMESTEP_END, TIMESTEP_BEGIN, MULTIAPP_FIXED_POINT_END, MULTIAPP_FIXED_POINT_BEGIN, FINAL, CUSTOM.
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
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.

Optional Parameters

T_initial_guess400Temperature initial guess for Newton Method variable set conversion
Default:400
C++ Type:double
Controllable:No
Description:Temperature initial guess for Newton Method variable set conversion
p_initial_guess200000Pressure initial guess for Newton Method variable set conversion
Default:200000
C++ Type:double
Controllable:No
Description:Pressure initial guess for Newton Method variable set conversion
tolerance1e-08Tolerance for 2D Newton variable set conversion
Default:1e-08
C++ Type:double
Controllable:No
Description:Tolerance for 2D Newton variable set conversion

Variable Set Conversions Newton Solve Parameters

allow_duplicate_execution_on_initialFalseIn the case where this UserObject is depended upon by an initial condition, allow it to be executed twice during the initial setup (once before the IC and again after mesh adaptivity (if applicable).
Default:False
C++ Type:bool
Controllable:No
Description:In the case where this UserObject is depended upon by an initial condition, allow it to be executed twice during the initial setup (once before the IC and again after mesh adaptivity (if applicable).
allow_imperfect_jacobiansFalsetrue to allow unimplemented property derivative terms to be set to zero for the AD API
Default:False
C++ Type:bool
Controllable:No
Description:true to allow unimplemented property derivative terms to be set to zero for the AD API
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.
execution_order_group0Execution order groups are executed in increasing order (e.g., the lowest number is executed first). Note that negative group numbers may be used to execute groups before the default (0) group. Please refer to the user object documentation for ordering of user object execution within a group.
Default:0
C++ Type:int
Controllable:No
Description:Execution order groups are executed in increasing order (e.g., the lowest number is executed first). Note that negative group numbers may be used to execute groups before the default (0) group. Please refer to the user object documentation for ordering of user object execution within a group.
force_postauxFalseForces the UserObject to be executed in POSTAUX
Default:False
C++ Type:bool
Controllable:No
Description:Forces the UserObject to be executed in POSTAUX
force_preauxFalseForces the UserObject to be executed in PREAUX
Default:False
C++ Type:bool
Controllable:No
Description:Forces the UserObject to be executed in PREAUX
force_preicFalseForces the UserObject to be executed in PREIC during initial setup
Default:False
C++ Type:bool
Controllable:No
Description:Forces the UserObject to be executed in PREIC during initial setup
fp_typesingle-phase-fpType of the fluid property object
Default:single-phase-fp
C++ Type:FPType
Controllable:No
Description:Type of the fluid property object
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

References

IAPWS. Guidelines on the Henry's constant and vapour liquid distribution constant for gases in H$_2$O and D$_2$O at high temperatures. Technical Report, IAPWS, 2004.

@techreport{iapws2004,
    author = "IAPWS",
    title = "{Guidelines on the Henry's constant and vapour liquid distribution constant for gases in H$\_2$O and D$\_2$O at high temperatures}",
    institution = "IAPWS",
    year = "2004"
}

Eric W Lemmon and RT Jacobsen. Viscosity and thermal conductivity equations for nitrogen, oxygen, argon, and air. International journal of thermophysics, 25(1):21–69, 2004.

@article{lemmon2004,
    author = "Lemmon, Eric W and Jacobsen, RT",
    title = "Viscosity and thermal conductivity equations for nitrogen, oxygen, argon, and air",
    journal = "International journal of thermophysics",
    volume = "25",
    number = "1",
    pages = "21--69",
    year = "2004"
}

Roland Span, Eric W Lemmon, Richard T Jacobsen, Wolfgang Wagner, and Akimichi Yokozeki. A reference equation of state for the thermodynamic properties of nitrogen for temperatures from 63.151 to 1000 k and pressures to 2200 mpa. J. Phys. Chem. Ref. Data, 29(6):1361–1433, 2000.

@article{span2000,
    author = "Span, Roland and Lemmon, Eric W and Jacobsen, Richard T and Wagner, Wolfgang and Yokozeki, Akimichi",
    title = "A reference equation of state for the thermodynamic properties of nitrogen for temperatures from 63.151 to 1000 K and pressures to 2200 MPa",
    journal = "J. Phys. Chem. Ref. Data",
    volume = "29",
    number = "6",
    pages = "1361--1433",
    year = "2000"
}

Properties of nitrogen
Range of validity
Input Parameters
References