Fluidic Oscillator

— interFoam, multiphase, interesting phenomenon, fluid logic, object functions —

Tobias once had an interesting discussion with his former colleague, Dr. Jan Bohacek, at the Montanuniversität Leoben. There they discussed about windscreens and fluidic oscillator systems. Sometimes, fluid dynamics without any moving parts do have exciting phenomena. 

— Computational Fluid Dynamics gives insight into exciting phenomena —

The following example can be used to explain different and complex fluid phenomena. The operation of the fluidic oscillator uses geometrical properties to start an oscillating fluid stream. The fluidic oscillator is used for windscreen cleaning devices on cars or trucks because no motion of mechanical parts is needed. The frequency is related to the size of the channels and the mass flux going through the fluidic oscillator. The case itself is meshed by using the in-house mesher, namely snappyHexMesh, and is further modified for 2D purposes. Additionally, a passive scalar transport equation is built on the fly by using the object function libraries. A source term is added by using the fvOptions options.

Fluidic Oscillator Picture 1
Fluidic Oscillator Picture 2
Fluidic Oscillator Picture 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 22.06.2020 — Downloads:
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Released 22.06.2020 — Downloads:
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Released 22.06.2020 — Downloads:
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Released 22.06.2020 — Downloads:
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