- T_initial_guess400Temperature initial guess for Newton Method variable set conversionDefault:400 C++ Type:double Unit:(no unit assumed) Controllable:No Description:Temperature initial guess for Newton Method variable set conversion 
- max_newton_its100Maximum number of Newton iterations for variable set conversionsDefault:100 C++ Type:unsigned int Controllable:No Description:Maximum number of Newton iterations for variable set conversions 
- p_initial_guess200000Pressure initial guess for Newton Method variable set conversionDefault:200000 C++ Type:double Unit:(no unit assumed) Controllable:No Description:Pressure initial guess for Newton Method variable set conversion 
- tolerance1e-08Tolerance for 2D Newton variable set conversionDefault:1e-08 C++ Type:double Unit:(no unit assumed) Controllable:No Description:Tolerance for 2D Newton variable set conversion 
LeadBismuthFluidProperties
Fluid properties for Lead Bismuth eutectic 2LiF-BeF2
These properties are based on experiments reported in the Handbook on Lead-bismuth Eutectic Alloy and Lead Properties, Materials Compatibility, Thermal-hydraulics and Technologies (Concetta et al., 2015). Most properties only depend on temperature; the fluid is considered incompressible. The fluid properties are summarized in Table 1, which reports the formulas used and their origin.
Table 1: Table of properties and references to the equations in (Concetta et al., 2015).
| Properties | Equations | Equation/Table # | 
|---|---|---|
| Melting point, (K) | 398 | Equation 2.1 | 
| Density, (kg/m^3) | Equation 2.30 | |
| Viscosity, (Pa-s) | Equation 2.83 | |
| Specific enthalpy, (J) | Equation 2.55 | |
| Thermal Conductivity, (W/m-K) | Equation 2.91 | |
| Isobaric Specific Heat, (J/kg-K) | Table 2.19.3 | |
| Isentropic Bulk Modulus, (N/m) | Equation 2.44 | |
| Speed of Sound, (m/s) | Table 2.19.3 | 
Range of validity
The properties defined in LeadBismuthFluidProperties from (Concetta et al., 2015) are valid for:
400 K T 1100 K
Uncertainties of Lead Bismuth Eutectic Fluid Properties
The reported uncertainties in (Concetta et al., 2015) for lead-bismuth eutectic fluid properties are:
| Properties | Range/ Uncertainties | 
|---|---|
| Density | 0.8% | 
| Viscosity | 8% | 
| Thermal Conductivity | 15% | 
| Isobaric Specific Heat | 7% | 
Input Parameters
- allow_imperfect_jacobiansFalsetrue to allow unimplemented property derivative terms to be set to zero for the AD APIDefault: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. 
- fp_typesingle-phase-fpType of the fluid property objectDefault:single-phase-fp C++ Type:FPType Controllable:No Description:Type of the fluid property object 
Advanced 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
References
- Fazio Concetta, Sobolev V.P., Aerts A., Gavrilov S., Lambrinou K., Schuurmans P., A. Gessi, Agostini P., Ciampichetti A., Martinelli L., Gosse S., Balbaud-Celerier F., Courouau J.L., Terlain A., Li N., Glasbrenner H., Neuhausen J., Heinitz S., Zanini L., Dai Y., Jolkkonen M., Kurata Y., Obara T., Thiolliere N., Martin-Munoz F.J., Heinzel A., Weisenburger A., Mueller G., Schumacher G., Jianu A., Pacio J., Marocco L., Stieglitz R., Wetzel T., Daubner M., Litfin K., Vogt J.B., Proriol-Serre I., Gorse D., Eckert S., Stefani F., Buchenau D., and Wondrak T. & Hwang.
Handbook on lead-bismuth eutectic alloy and lead properties, materials compatibility, thermal- hydraulics and technologies.
Technical Report NEA–7268, Nuclear Energy Agency of the OECD, 2015.[BibTeX]