Geometry

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Autoconstraints

Turn on Autoconstraints by following the instructions at this link. In some versions such as

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ANSYS 15.0,

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this feature is turned off by default. If Autoconstraints is not turned on, vertices and lines in your sketches will not be coincident with the coordinate axes. This can cause problems in your solution later on in which case  you have to start from scratch which is never fun. 

2D Analysis Type

The default Analysis Type is 3D, which must be changed, considering the problem at hand is 2D. This tells ANSYS to use the 2D version of the heat equation as the governing equation in our boundary value problem. In order to make this change first (Right Click) Geometry > Properties , as shown below.

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