findThermalBC
Find thermal boundary conditions assigned to a geometric region
Domain-specific heat transfer workflow is not recommended. New features might not be compatible with this workflow. For help migrating your existing code to the unified finite element workflow, see Migration from Domain-Specific to Unified Workflow.
Description
returns the thermal boundary condition assigned to the specified region.tbca
= findThermalBC(boundaryConditions
,RegionType
,RegionID
)
Examples
Find Thermal Boundary Conditions for Edges of 2-D Geometry
Create a thermal model and include a square geometry.
thermalmodel = createpde("thermal"); geometryFromEdges(thermalmodel,@squareg); pdegplot(thermalmodel,"EdgeLabels","on") ylim([-1.1 1.1]) axis equal
Apply temperature boundary conditions on edges 1 and 3 of the square.
thermalBC(thermalmodel,"Edge",[1 3],"Temperature",100);
Apply a heat flux boundary condition on edge 4 of the square.
thermalBC(thermalmodel,"Edge",4,"HeatFlux",20);
Check the boundary condition specification on edge 1.
tbcaEdge1 = findThermalBC(thermalmodel.BoundaryConditions,"Edge",1)
tbcaEdge1 = ThermalBC with properties: RegionType: 'Edge' RegionID: [1 3] Temperature: 100 HeatFlux: [] ConvectionCoefficient: [] Emissivity: [] AmbientTemperature: [] Vectorized: 'off' Label: []
Check the boundary condition specifications on edges 3 and 4.
tbca = findThermalBC(thermalmodel.BoundaryConditions,"Edge",3:4);
tbcaEdge3 = tbca(1)
tbcaEdge3 = ThermalBC with properties: RegionType: 'Edge' RegionID: [1 3] Temperature: 100 HeatFlux: [] ConvectionCoefficient: [] Emissivity: [] AmbientTemperature: [] Vectorized: 'off' Label: []
tbcaEdge4 = tbca(2)
tbcaEdge4 = ThermalBC with properties: RegionType: 'Edge' RegionID: 4 Temperature: [] HeatFlux: 20 ConvectionCoefficient: [] Emissivity: [] AmbientTemperature: [] Vectorized: 'off' Label: []
Find Thermal Boundary Conditions for Faces of 3-D Geometry
Create a thermal model and include a block geometry.
thermalmodel = createpde("thermal","transient"); gm = importGeometry(thermalmodel,"Block.stl"); pdegplot(thermalmodel,"FaceLabels","on","FaceAlpha",0.5)
Apply temperature boundary condition on faces 1 and 3 of a block.
thermalBC(thermalmodel,"Face",1,"Temperature",100); thermalBC(thermalmodel,"Face",3,"Temperature",300);
Apply convection boundary condition on faces 5 and 6 of a block.
thermalBC(thermalmodel,"Face",[5,6],... "ConvectionCoefficient",5,... "AmbientTemperature",27);
Check the boundary condition specification on faces 1 and 3.
tbca = findThermalBC(thermalmodel.BoundaryConditions,"Face",[1,3]);
tbcaFace1 = tbca(1)
tbcaFace1 = ThermalBC with properties: RegionType: 'Face' RegionID: 1 Temperature: 100 HeatFlux: [] ConvectionCoefficient: [] Emissivity: [] AmbientTemperature: [] Vectorized: 'off' Label: []
tbcaFace3 = tbca(2)
tbcaFace3 = ThermalBC with properties: RegionType: 'Face' RegionID: 3 Temperature: 300 HeatFlux: [] ConvectionCoefficient: [] Emissivity: [] AmbientTemperature: [] Vectorized: 'off' Label: []
Check the boundary condition specifications on faces 5 and 6.
tbcaFace5 = findThermalBC(thermalmodel.BoundaryConditions,"Face",5)
tbcaFace5 = ThermalBC with properties: RegionType: 'Face' RegionID: [5 6] Temperature: [] HeatFlux: [] ConvectionCoefficient: 5 Emissivity: [] AmbientTemperature: 27 Vectorized: 'off' Label: []
tbcaFace6 = findThermalBC(thermalmodel.BoundaryConditions,"Face",6)
tbcaFace6 = ThermalBC with properties: RegionType: 'Face' RegionID: [5 6] Temperature: [] HeatFlux: [] ConvectionCoefficient: 5 Emissivity: [] AmbientTemperature: 27 Vectorized: 'off' Label: []
Input Arguments
boundaryConditions
— Boundary conditions of a thermal model
BoundaryConditions
property of a thermal model
Boundary conditions of a thermal model, specified as the
BoundaryConditions
property of a
ThermalModel
object.
Example: thermalmodel.BoundaryConditions
RegionType
— Geometric region type
"Face"
| "Edge"
Geometric region type, specified as "Face"
for 3-D
geometry or "Edge"
for 2-D geometry.
Data Types: char
| string
RegionID
— Geometric region ID
vector of positive integers
Geometric region ID, specified as a vector of positive integers. Find the
region IDs using pdegplot
with the
"FaceLabels"
(3-D) or "EdgeLabels"
(2-D) value set to "on"
.
Data Types: double
Output Arguments
tbca
— Thermal boundary condition for a particular region
ThermalBC
object
Thermal boundary condition for a particular region, returned as a
ThermalBC
object.
Version History
Introduced in R2017a
See Also
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