# NaClFluidProperties

Fluid properties for NaCl

NaCl fluid properties as a function of pressure (Pa) and temperature (K).

note

Only solid state (halite) properties are currently implemented to use in brine formulation

Properties for halite given by Driesner (2007), apart from thermal conductivity, which is calculated using the data of Urqhart and Bauer (2015). Critical values are taken from Anderko and Pitzer (1992).

## Properties of NaCl

Propertyvalue
Molar mass0.058443 kg/mol
Critical temperature3841.15 K
Critical pressure18.2 MPa
Critical density108.43 kg/m
Triple point temperature1073.85 K
Triple point pressure50 Pa

## Range of validity

The NaClFluidProperties UserObject is valid for the solid phase region only

## Input Parameters

• allow_imperfect_jacobiansFalsetrue to allow unimplemented property derivative terms to be set to zero for the AD API

Default:False

C++ Type:bool

Options:

Description:true to allow unimplemented property derivative terms to be set to zero for the AD API

• execute_onTIMESTEP_ENDThe list of flag(s) indicating when this object should be executed, the available options include NONE, INITIAL, LINEAR, NONLINEAR, TIMESTEP_END, TIMESTEP_BEGIN, FINAL, CUSTOM.

Default:TIMESTEP_END

C++ Type:ExecFlagEnum

Options:NONE INITIAL LINEAR NONLINEAR TIMESTEP_END TIMESTEP_BEGIN FINAL CUSTOM

Description:The list of flag(s) indicating when this object should be executed, the available options include NONE, INITIAL, LINEAR, NONLINEAR, TIMESTEP_END, TIMESTEP_BEGIN, FINAL, CUSTOM.

### Optional Parameters

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

C++ Type:std::vector

Options:

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

• enableTrueSet the enabled status of the MooseObject.

Default:True

C++ Type:bool

Options:

Description:Set the enabled status of the MooseObject.

• 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

Options:

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).

• force_preauxFalseForces the GeneralUserObject to be executed in PREAUX

Default:False

C++ Type:bool

Options:

Description:Forces the GeneralUserObject to be executed in PREAUX

• 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

Options:

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.

2. T. Driesner. The system H$_2$O-NaCl. Part II: Correlations for molar volume, enthalpy, and isobaric heat capacity from 0 to 1000 C, 1 to 5000 bar, and 0 to 1 X$_NaCl$. Geochimica et Cosmochimica Acta, 71:4902–4919, 2007.[BibTeX]