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2019-10-28

Question

Is it possible to design a "Kármán vortex street" behind an object in the numerical wind tunnel of RWIND Simulation?


Answer:
Yes, the effect of a "Kármán vortex street" can be modeled in RWIND2 with the "Transient Flow" mode; this was not possible in previous versions.

Particularly narrow and high models require extremely fine meshing over the entire height. Furthermore, the effect is heavily dependent on the Reynolds number and surface roughness settings.

Under Links, you can find a suitable model as an example in [1], as well as a visualization in [2], and the corresponding documentation in [3].



Author

Mr. Niemeier is responsible for the development of RFEM, RSTAB, RWIND Simulation, and in the area of membrane structures. He is also responsible for quality assurance and customer support.

Links
References
  1. DIN 4149: Bauten in deutschen Erdbebengebieten - Lastannahmen, Bemessung und Ausführung üblicher Hochbauten. Beuth Verlag GmbH, Berlin, 04, 2005.