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Geometry
For axisymmetric models, we use cylindrical polar coordinates (r, θ, z) with no variation in the θ direction. So we can just model a slice in the (r, z) plane as shown below.
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We will first create a sketch and then a "surface body" from the sketch. The "surface body" is nothing but an area that we can mesh and apply boundary conditions to. The video below shows the steps to be followed to create the sketch and surface body.
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Go to Step 3: Continue to Step 3 - Mesh