The following video shows step by step process of geometry creation. In this video, you will learn to create the platinum layer and silicon dioxide layer. Also, the volume of water is created.
After completing the geometry creation part, the next step is to parameterize the dimension. This video shows how to create parameters.
If you are using Ansys 15.0, please go through the following topic for the procedure for turning on the Auto Constraint feature before creating sketches in Ansys DesignModeler.