Day 1

Day 1 is all about fast and fun simulations with the focus on

• the basic workflow in OpenFOAM
• getting used to the terminal
• meshing with the OpenFOAM internal meshing utility blockMesh
• running simulations
• first steps with postprocessing in Paraview

Go back to "3 weeks" series.

First simulation

In this tutorial you will get a first hands-on glimpse into the workflow of CFD simulations with OpenFOAM. The pdf version can be found here. The following topics will be covered:

• basic case setup
• initial values
• mesh
• simulation (2D elbow case with three meshes)
• postprocessing

Basic case setup

Using icoFoam solver, simulate 75 s of flow in an elbow.

• Basic case setup in OpenFOAM
• Setting up initial values of p and U
• Ensuring proper boundary definitions

Cavity tutorial

This is one of the most basics tutorials. You will revisit this example, so it is a good idea to try it out now. Here, you will get a fast walkthrough with a good explanation about

• the mesh
• running the case
• postprocessing the results.

OpenFOAM basics

Here you will find a video on the very basics of OpenFOAM. You will hear about

• OpenFOAM and what it is good for
• the history and philosophy behind it
• the basics and the structure.

Session A: Getting to know OpenFOAM

In this tutorial study

• what is the history of OpenFOAM
• the philosophy behind the OpenFOAM software
• what is the content of the OpenFOAM software package

blockMesh with a more complicated case

In this second tutorial video you will try out your knowledge about blockMesh in order to create a more complicated mesh for a simulation. The pdf version can be found here. The focus is on

• scaling the mesh
• setting the vertices
• setting volumes (blocks)
• setting edges
• boundaries
• grading

Built in mesh

Using sonicFoam solver, simulate 10 s of flow over a forward step.

• Basic case setup in OpenFOAM
• Setting up initial values of p and U
• Ensuring proper boundary definitions

blockMesh - summary

Yes, the first day is almost over. Look forward to your regeneration by finishing this last tutorial. Here you will find a summary on meshing with blockMesh. You will find a

• visual description of the blockMeshDict dictionary
• fun geometries for exercise

End of Day 1

Thank you for finishing the first day. We hope, that you had fun and you will continue tomorrow with Day 2. The topics tomorrow are:

• more detailed understanding of the work flow
• further short and fun simulations
• grid convergence
• transport equations
• detailed scientific visualization of results

Homework: relax.