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Documentation: Getting started with Molflow

Simulating with Molflow consists of 3 steps. The best way to learn them is to go through the quick start tutorial.

1. Import geometry

Although Molflow contains basic geometry editing functions, to start your simulation, you need to import/load your own geometry. If you have your geometry in a CAD porgram, make it as simple as possible, then export it in STL format. When you do that, take care of the following:

  • The STL file must be in ASCII (Text) format. Some CAD programs offer binary format that Molflow won't read.
  • STL files contain only coordinates, but not the units. Usually you need to choose the units when exporting. You can choose anything, but remember your choice, it will be useful when you import the file.

Then import the geometry to Molflow. You will be asked what units your CAD program was exporting with, then all units will be converted to centimeters, the default unit in Molflow.

Then, to merge the triangles into facets, you will have to collapse your geometry.

2. Set up facets

What you have imported so far is the pure geometry. You need to define desorption and pumps. To do this, read the particles in and particles out sections of the facets parameters panel.

3. Interpret results

Run your simulation and get the results (pressure, most notably). For this, you will need profiles and textures. The best way to learn how to set them up is by following the quick start tutorial.

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