Vertical Axial Wind Turbine

— pimpleFoam, flow induced rotation, six-degree-of-freedom —

For different engineering applications, flow induced rotation scenarios are the main focus. For example one can investigate into wind-turbines and its blade geometry. Commonly, people fix the rotations-per-minute (rpm) of the rotor during the simulation to get a better understanding of the ongoing physics. This is common practice and state of the art. However, it is also possible to allow the fluid to do the work and rotate the rotor based on the pressure acting on the blades, including inertia effects and so on. This case demonstrates a 2D case of such a set-up using the six-degree-of-freedom library in the vertical axial wind turbine (VAWT) scenario.


— Flow induced rotation using the Six-Degree-of-Freedom library —

The case demonstrates how to set-up the numerical mesh for the static and moving part using the Arbitrary-Mesh-Interface (AMI) boundary condition. Additionally, the pre-defined set-up of the dynamicMeshDict for the six-degree-of-freedom library is presented with a lot of comments that allows one to understand the physical and numerical parameter much better.

Sneezing Simulation Visualization 1
Sneezing Simulation Visualization 2
Sneezing Simulation Visualization 3


— Published under the GNU General Public License 3

Over the last ten years, Tobias tried to publish a wide range of different materials related to OpenFOAM® and CFD. You know it much better than he does if the content is worth to be supported. If you want to thank Tobias for the work he did, feel free to tell the community your opinion about the work Tobias Holzmann is doing or you can email your thoughts directly to »This email address is being protected from spambots. You need JavaScript enabled to view it.«. Keep in mind that the work that was done here took much time, and it is not self-evident that Tobias Holzmann shares all his work, knowledge, and attitude for free and keep the data up to date. Hosting the material, updating the data, and keeping up interesting work for the community does take much time and also money. Supporting Tobias can be done by donating any amount you would like to give or help him with his projects.


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The available training cases are tested and built for different OpenFOAM® versions. During the tests, only the OpenFOAM Foundation version of OpenFOAM® was used. Furthermore, the following software packages are required for most of the training cases: Salome®, ParaView®, and for optimization tasks one also needs DAKOTA®. The cases might work with the ESI version of OpenFOAM® too (not tested). Additionally, there is no support for Windows-based OpenFOAM® versions.

Released 22.04.2020 — Downloads:
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Released 16.04.2020 — Downloads:
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