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# Example11Blocks Set with Discontinuous Boundary

General

• The “discontinuous” boundary condition is studied in this exercise. The model consists of two blocks contacting each other.

• If bodies are contacting each other, the temperature is usually continuous at the boundary.
If the “discontinuous” boundary condition is set, the temperature will be discontinuous.

• The temperature distribution and the heat flux vectors are solved.

• Unless specified in the list below, the default conditions will be applied.

### Analysis Space

 Item Settings Analysis Space 3D Model unit mm

### Analysis Conditions

 Item Settings Solvers Thermal Analysis [Watt] Analysis Type Steady-state analysis Options N/A

### Model

Two rectangular solid bodies are in contact each other. The “discontinuous” boundary condition is set at the contact face.

The material is polyethylene. The top and bottom faces are set with the “temperature” boundary condition.

### Body Attributes and Materials

 Body Number/Type Body Attribute Name Material Name 0/Solid V1 000_Polyethylene(PE) * 1/Solid V1 000_Polyethylene(PE) *

* Available from the Material DB

### Boundary Conditions

 Boundary Condition Name/Topology Tab Boundary Condition Type Settings 0degree/Face Thermal Temperature 0[deg] 50degree/Face Thermal Temperature 50[deg] 85degree/Face Thermal Temperature 85[deg] NONCONT Symmetry/Continuity Discontinuous Discontinuous

### Results

The temperature distribution is shown below.

The right block is 50[deg] all over the body while the temperature distribution is exhibited with the left block.

There is no heat transfer between them.

For comparison, the “continuous” boundary condition is set at the contact face. The result is shown below.

The heat transfer is exhibited across the blocks.

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