- block_idSubdomain id to set for inside of the combinatorial
C++ Type:unsigned short
Unit:(no unit assumed)
Controllable:No
Description:Subdomain id to set for inside of the combinatorial
- combinatorial_geometryFunction expression encoding a combinatorial geometry
C++ Type:std::string
Unit:(no unit assumed)
Controllable:No
Description:Function expression encoding a combinatorial geometry
- inputThe mesh we want to modify
C++ Type:MeshGeneratorName
Unit:(no unit assumed)
Controllable:No
Description:The mesh we want to modify
ParsedSubdomainMeshGenerator
Uses a parsed expression (combinatorial_geometry) to determine if an element (via its centroid) is inside the region defined by the expression and assigns a new block ID.
Example
The desired example mesh is a 1-by-1 2D square which contains Block 1 (a centered 0.8-by-0.8 square) and Block 2 (a 0.4-by-0.4 square located in the bottom left quarter of Block 1). The remaining edge of the square can be Block 0.
The combinatorial expression that defines Block 1 is below.
x > 0.1 & x < 0.9 & y > 0.1 & y < 0.9
The expression
x < 0.5 & y < 0.5
can partially define Block 2, but the region outside Block 1 also needs to be excluded. The input file syntax needed to generate this example is shown below.
[Mesh]
[gmg]
type = GeneratedMeshGenerator
dim = 2
nx = 10
ny = 10
xmax = 1
ymax = 1
uniform_refine = 2
[]
[subdomains]
type = ParsedSubdomainMeshGenerator
input = gmg
combinatorial_geometry = 'x > 0.1 & x < 0.9 & y > 0.1 & y < 0.9'
block_id = 1
[]
[subdomains2]
type = ParsedSubdomainMeshGenerator
combinatorial_geometry = 'x < 0.5 & y < 0.5'
excluded_subdomains = '0'
block_id = 2
input = subdomains
[]
[]
The final mesh output is:
Input Parameters
- block_nameSubdomain name to set for inside of the combinatorial
C++ Type:SubdomainName
Unit:(no unit assumed)
Controllable:No
Description:Subdomain name to set for inside of the combinatorial
- constant_expressionsVector of values for the constants in constant_names (can be an FParser expression)
C++ Type:std::vector<std::string>
Unit:(no unit assumed)
Controllable:No
Description:Vector of values for the constants in constant_names (can be an FParser expression)
- constant_namesVector of constants used in the parsed function
C++ Type:std::vector<std::string>
Unit:(no unit assumed)
Controllable:No
Description:Vector of constants used in the parsed function
- epsilon1e-12Fuzzy comparison tolerance
Default:1e-12
C++ Type:double
Unit:(no unit assumed)
Controllable:No
Description:Fuzzy comparison tolerance
- excluded_subdomainsA set of subdomain names that will not changed even if they are inside/outside the combinatorial geometry
C++ Type:std::vector<SubdomainName>
Unit:(no unit assumed)
Controllable:No
Description:A set of subdomain names that will not changed even if they are inside/outside the combinatorial geometry
- extra_element_id_namesExtra element integers used in the parsed expression
C++ Type:std::vector<ExtraElementIDName>
Unit:(no unit assumed)
Controllable:No
Description:Extra element integers used in the parsed expression
Optional Parameters
- control_tagsAdds user-defined labels for accessing object parameters via control logic.
C++ Type:std::vector<std::string>
Unit:(no unit assumed)
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
Unit:(no unit assumed)
Controllable:No
Description:Set the enabled status of the MooseObject.
- save_with_nameKeep the mesh from this mesh generator in memory with the name specified
C++ Type:std::string
Unit:(no unit assumed)
Controllable:No
Description:Keep the mesh from this mesh generator in memory with the name specified
Advanced Parameters
- disable_fpoptimizerFalseDisable the function parser algebraic optimizer
Default:False
C++ Type:bool
Unit:(no unit assumed)
Controllable:No
Description:Disable the function parser algebraic optimizer
- enable_ad_cacheTrueEnable caching of function derivatives for faster startup time
Default:True
C++ Type:bool
Unit:(no unit assumed)
Controllable:No
Description:Enable caching of function derivatives for faster startup time
- enable_auto_optimizeTrueEnable automatic immediate optimization of derivatives
Default:True
C++ Type:bool
Unit:(no unit assumed)
Controllable:No
Description:Enable automatic immediate optimization of derivatives
- enable_jitTrueEnable just-in-time compilation of function expressions for faster evaluation
Default:True
C++ Type:bool
Unit:(no unit assumed)
Controllable:No
Description:Enable just-in-time compilation of function expressions for faster evaluation
- evalerror_behaviornanWhat to do if evaluation error occurs. Options are to pass a nan, pass a nan with a warning, throw a error, or throw an exception
Default:nan
C++ Type:MooseEnum
Unit:(no unit assumed)
Controllable:No
Description:What to do if evaluation error occurs. Options are to pass a nan, pass a nan with a warning, throw a error, or throw an exception
Parsed Expression Advanced Parameters
- nemesisFalseWhether or not to output the mesh file in the nemesisformat (only if output = true)
Default:False
C++ Type:bool
Unit:(no unit assumed)
Controllable:No
Description:Whether or not to output the mesh file in the nemesisformat (only if output = true)
- outputFalseWhether or not to output the mesh file after generating the mesh
Default:False
C++ Type:bool
Unit:(no unit assumed)
Controllable:No
Description:Whether or not to output the mesh file after generating the mesh
- show_infoFalseWhether or not to show mesh info after generating the mesh (bounding box, element types, sidesets, nodesets, subdomains, etc)
Default:False
C++ Type:bool
Unit:(no unit assumed)
Controllable:No
Description:Whether or not to show mesh info after generating the mesh (bounding box, element types, sidesets, nodesets, subdomains, etc)