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Solve this problem with the same procedure for the shell and specimen tutorial. First solve the steady state model and transfer the data to transient analysis to complete the simulation. Make sure you use the same step end time and the same boundary and initial conditions.

From the tabular data in Mechanical, the net radiation of the smaller cylinder is -0.423 watts at the step end time. ANSYS result shows a 1.4% deviation from the analytic solution. Hence we can verify that the view factor and radiation heat transfer are computed correctly in this set up. This also verifies the validity of the shell and specimen model.