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Problem Specification
Pre-analysis & Start-up
2. Geometry
3. Mesh
4. Setup (Physics)
5. Solution
6. Results
7. Verification & Validation
Pre-Analysis
We are interested in finding the radiation exchanged between the shell and the specimen surface. We will run a steady state thermal analysis to set the initial conditions of the model. Then we will transfer the initial conditions to transient thermal to complete the radiation analysis. Symmetry boundary conditions are added to the transient thermal model. This is essential to problems involving radiation because it enables the FEA code to compute the view factor between the surfaces in the full model. It is possible to run a full model without symmetry boundary conditions but this example will run faster with 1/8 symmetric model.
Start-up
Open ANSYS workbench and drag the Steady State Thermal(ANSYS) icon from the toolbox to Project Schematic. Name the project Radiation between surfaces.
Engineering Properties
Double click on Engineering Data(ANSYS) to open the Engineering Data page. Check that Structural Steel (ANSYS) appears as the default material.
Note
Only the isotropic thermal conductivity is specified in steady state analysis. We will need to add additional properties before we proceed to the transient thermal analysis.
Leave the material properties unchanged and move on to create the geometry.