# SimpleFluidProperties

Fluid properties for a simple fluid with a constant bulk density

This is a computationally simple fluid based on a constant bulk modulus density fluid, with density given by (1) where (the bulk modulus) and (the thermal expansion coefficient) are constants.

In this formulation, viscosity and thermal conductivity are constant (with values specified in the input file), while internal energy and enthalpy are given by (2) and (3) respectively. Here is called the porepressure_coefficient: usually it should be set to but many analytical studies assume .

## Input Parameters

• cp4194Constant specific heat capacity at constant pressure (J/kg/K)

Default:4194

C++ Type:double

Description:Constant specific heat capacity at constant pressure (J/kg/K)

• thermal_expansion0.000214Constant coefficient of thermal expansion (1/K)

Default:0.000214

C++ Type:double

Description:Constant coefficient of thermal expansion (1/K)

• thermal_conductivity0.6Constant thermal conductivity (W/m/K)

Default:0.6

C++ Type:double

Description:Constant thermal conductivity (W/m/K)

• molar_mass0.018Constant molar mass of the fluid (kg/mol)

Default:0.018

C++ Type:double

Description:Constant molar mass of the fluid (kg/mol)

• viscosity0.001Constant dynamic viscosity (Pa.s)

Default:0.001

C++ Type:double

Description:Constant dynamic viscosity (Pa.s)

• bulk_modulus2e+09Constant bulk modulus (Pa)

Default:2e+09

C++ Type:double

Description:Constant bulk modulus (Pa)

• porepressure_coefficient1The enthalpy is internal_energy + P / density * porepressure_coefficient. Physically this should be 1.0, but analytic solutions are simplified when it is zero

Default:1

C++ Type:double

Description:The enthalpy is internal_energy + P / density * porepressure_coefficient. Physically this should be 1.0, but analytic solutions are simplified when it is zero

• specific_entropy300Constant specific entropy (J/kg/K)

Default:300

C++ Type:double

Description:Constant specific entropy (J/kg/K)

• density01000Density at zero pressure and zero temperature

Default:1000

C++ Type:double

Description:Density at zero pressure and zero temperature

• 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

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.

• henry_constant0Henry constant for dissolution in water

Default:0

C++ Type:double

Description:Henry constant for dissolution in water

• cv4186Constant specific heat capacity at constant volume (J/kg/K)

Default:4186

C++ Type:double

Description:Constant specific heat capacity at constant volume (J/kg/K)

### Optional Parameters

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

C++ Type:std::vector

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

• enableTrueSet the enabled status of the MooseObject.

Default:True

C++ Type:bool

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

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).

• 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

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.

• force_preauxFalseForces the GeneralUserObject to be executed in PREAUX

Default:False

C++ Type:bool

Description:Forces the GeneralUserObject to be executed in PREAUX