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In this page, we’ll walk through how we would conduct a CFD simulation for a UAV drone to determine it’s drag coefficient. While this type of modelling may not be very useful for quadcopters, it is much easier to model and hence it is a good introduction to Ansys Fluent.

Step 1: Creating a Project

Open up “Workbench”.

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From the list of simulations on the left, double click on “Fluid Flow (Fluent)” which should open up a small window/schematic that you see in the white space. This essentially represents your “Project”. (You can hit CTRL + S to save your project right here if you want)

Step 2: Importing Model/Setting up a Geometry

The first step of running any simulation is setting up your model and orienting them.

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That’s it for setting up your model! Save the geometry file and minimize the tab.

Step 3: Generating a Mesh

What is a mesh?

  • In simulation, a mesh is a network formed by cells or points. It divides an object into sets of smaller elements which are used to solve calculus equations.

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Hit CTRL + S and that’s it for the mesh! There are so many details you can control, like adding additional meshes in one specific region only etc. Feel free to research these in more detail.

Step 4: Setting up the study and defining boundary conditions

What are “boundary conditions”?

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