Neko: Portable framework for high-order spectral element flow simulations

github.com

56 points·nateb2022··8 comments

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Wish there was visuals

Visuals can be found in the 2022 Gallery of Fluid Motion:

https://gfm.aps.org/meetings/dfd-2022/6324c918199e4c2c0873fc...

and in the following open-access papers:

https://dl.acm.org/doi/pdf/10.1145/3581784.3627039

https://journals.sagepub.com/doi/epub/10.1177/10943420231158...

Do i understand correctly the video from 1, wants to make a propulsion system out of a spinning rod to leverage the Magnus effect? Why ??? It is awesome!

Also I know that the algorithms are often tested against wind tunnel experiments, but wouldn't the implementation also be worth the test? There are many demons I can think of between the numerical algorithm and their implementation.

Great job! I loathed working in the field of CFD due to its penchant for old Fortran and non engineers doing IT tools.

There are some real-life applications already, eg https://www.norsepower.com/passenger/

https://en.wikipedia.org/wiki/Flettner_rotor

https://en.wikipedia.org/wiki/Rotor_ship

Really want to try to test that rotating cylinder case shown in the paper. Apprecitate anyone could pin point the source code to run a simple case like that.

The case from the paper is open and available here: https://github.com/ExtremeFLOW/flettner_rotor

However, it need some work to get it running with more recent versions of Neko.

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