SpecifiedVaporPressureBC

Prescribed vapor pressure boundary condition for moisture transport in concrete.

Description

This boundary condition provides the ability to prescribe the vapor pressure at a location to influence the solution for the relative humidity in a concrete moisture transport simulation. It computes a saturated vapor pressure, $var element = document.getElementById("moose-equation-ebb021e5-f84b-4a05-9621-3e676cc8966e");katex.render("P_{vs}", element, {displayMode:false,throwOnError:false});$ , defined by Bary et al. (2012) as:

(1)var element = document.getElementById("moose-equation-82cd583a-e6e7-42cf-abf6-9db118d810d8");katex.render("P_{vs} = P_{atm}\\exp\\left(4871.3\\frac{T-100}{373.15T}\\right)", element, {displayMode:true,throwOnError:false});

where

$var element = document.getElementById("moose-equation-e2701380-3250-404c-b0e7-fcedde15f32f");katex.render("T", element, {displayMode:false,throwOnError:false});$ = temperature in K
$var element = document.getElementById("moose-equation-cc65ea21-9865-4643-90f5-5ccea1a898bf");katex.render("P_{atm}", element, {displayMode:false,throwOnError:false});$ = standard atmospheric pressure (101325 Pa)

Note that although $var element = document.getElementById("moose-equation-f635ace3-45e4-4b1c-81c0-a5ccb5554780");katex.render("T", element, {displayMode:false,throwOnError:false});$ in the above formula is in K, the model is designed to accept T in units of $var element = document.getElementById("moose-equation-505a2c68-0478-4f8e-8211-c92ea9583e14");katex.render("\\degree", element, {displayMode:false,throwOnError:false});$ C and convert to K internally. This saturated vapor pressure is then used to compute a prescribed relative humidity, $var element = document.getElementById("moose-equation-7901193a-9f61-4a15-ac93-ca49e1a1e32f");katex.render("P_{v,pres}", element, {displayMode:false,throwOnError:false});$ , which is prescribed using a Dirichlet-style boundary condition:

(2)var element = document.getElementById("moose-equation-36df725a-0fc0-4359-b509-6d8b8cb9b6fe");katex.render("rh_{pres}=P_{v,pres}/P_{vs}", element, {displayMode:true,throwOnError:false});

To avoid sudden changes, this is ramped from initial prescribed conditions over a user-specified duration.

Input Parameters

boundaryThe list of boundary IDs from the mesh where this object applies
C++ Type:std::vector<BoundaryName>
Controllable:No
Description:The list of boundary IDs from the mesh where this object applies
vapor_pressurein Pa
C++ Type:double
Unit:(no unit assumed)
Controllable:No
Description:in Pa
variableThe name of the variable that this residual object operates on
C++ Type:NonlinearVariableName
Unit:(no unit assumed)
Controllable:No
Description:The name of the variable that this residual object operates on

Required Parameters

T_ref20Initial temperature in C
Default:20
C++ Type:double
Unit:(no unit assumed)
Controllable:No
Description:Initial temperature in C
diag_save_inThe name of auxiliary variables to save this BC's diagonal jacobian contributions to. Everything about that variable must match everything about this variable (the type, what blocks it's on, etc.)
C++ Type:std::vector<AuxVariableName>
Unit:(no unit assumed)
Controllable:No
Description:The name of auxiliary variables to save this BC's diagonal jacobian contributions to. Everything about that variable must match everything about this variable (the type, what blocks it's on, etc.)
displacementsThe displacements
C++ Type:std::vector<VariableName>
Unit:(no unit assumed)
Controllable:No
Description:The displacements
duration0
Default:0
C++ Type:double
Unit:(no unit assumed)
Controllable:No
matrix_onlyFalseWhether this object is only doing assembly to matrices (no vectors)
Default:False
C++ Type:bool
Controllable:No
Description:Whether this object is only doing assembly to matrices (no vectors)
rh_ref0.96initial relative humidity
Default:0.96
C++ Type:double
Unit:(no unit assumed)
Controllable:No
Description:initial relative humidity
save_inThe name of auxiliary variables to save this BC's residual contributions to. Everything about that variable must match everything about this variable (the type, what blocks it's on, etc.)
C++ Type:std::vector<AuxVariableName>
Unit:(no unit assumed)
Controllable:No
Description:The name of auxiliary variables to save this BC's residual contributions to. Everything about that variable must match everything about this variable (the type, what blocks it's on, etc.)
temperaturenonlinear variable name holding temperature field
C++ Type:std::vector<VariableName>
Unit:(no unit assumed)
Controllable:No
Description:nonlinear variable name holding temperature field

Optional Parameters

absolute_value_vector_tagsThe tags for the vectors this residual object should fill with the absolute value of the residual contribution
C++ Type:std::vector<TagName>
Controllable:No
Description:The tags for the vectors this residual object should fill with the absolute value of the residual contribution
extra_matrix_tagsThe extra tags for the matrices this Kernel should fill
C++ Type:std::vector<TagName>
Controllable:No
Description:The extra tags for the matrices this Kernel should fill
extra_vector_tagsThe extra tags for the vectors this Kernel should fill
C++ Type:std::vector<TagName>
Controllable:No
Description:The extra tags for the vectors this Kernel should fill

Contribution To Tagged Field Data 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
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

matrix_tagssystem timeThe tag for the matrices this Kernel should fill
Default:system time
C++ Type:MultiMooseEnum
Options:nontime, system, time
Controllable:No
Description:The tag for the matrices this Kernel should fill
vector_tagsresidualThe tag for the vectors this Kernel should fill
Default:residual
C++ Type:MultiMooseEnum
Options:nontime, time, residual
Controllable:No
Description:The tag for the vectors this Kernel should fill

Tagging Parameters

References

Beno\^ıt Bary, Marcus V.G. de Morais, Stéphane Poyet, and Sabine Durand. Simulations of the thermo-hydro-mechanical behaviour of an annular reinforced concrete structure heated up to 200°c. Engineering Structures, 36:302–315, March 2012.

@article{Bary2012,
    author = "Bary, Beno{\^{\i}}t and de Morais, Marcus V.G. and Poyet, St{\'{e}}phane and Durand, Sabine",
    journal = "Engineering Structures",
    month = "March",
    pages = "302--315",
    title = "Simulations of the thermo-hydro-mechanical behaviour of an annular reinforced concrete structure heated up to 200{\textdegree}C",
    volume = "36",
    year = "2012"
}

Description
Input Parameters
References

Usage

Development

Demonstration