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findThermalBC

Find thermal boundary conditions assigned to a geometric region

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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.

Syntax

tbca = findThermalBC(boundaryConditions,RegionType,RegionID)

Description

tbca = findThermalBC(boundaryConditions,RegionType,RegionID) returns the thermal boundary condition assigned to the specified region.

example

Examples

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Open Live Script

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

Figure contains an axes object. The axes object contains 5 objects of type line, text.

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: []
Open Live Script

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)

Figure contains an axes object. The axes object contains 6 objects of type quiver, text, patch, line.

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

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Boundary conditions of a thermal model, specified as the BoundaryConditions property of a ThermalModel object.

Example: thermalmodel.BoundaryConditions

Geometric region type, specified as "Face" for 3-D geometry or "Edge" for 2-D geometry.

Data Types: char | string

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

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Thermal boundary condition for a particular region, returned as a ThermalBC object.

Version History

Introduced in R2017a

See Also

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