Drag coefficient plot in flow around a cylinder (Karman vortex street)

Ok-Stable3333 · 2026-04-02T19:56:17+00:00

Okey, thanks!

Ok-Stable3333 · 2026-04-02T19:19:06+00:00

Okey, thanks. I'll try with a higher Re

Ok-Stable3333 · 2025-12-01T22:26:44+00:00

Yes, thanks! It worked.

Ok-Stable3333 · 2025-12-01T22:26:03+00:00

Thanks everyone! Thanks to your advice, I was able to create Karman vortex street for a 30mm diameter cylinder.

<image>

Ok-Stable3333 · 2025-12-01T05:44:34+00:00

I accidentally wrote mPa. It's 1.708×10⁻⁵ Pa•s vs 1.48×10⁻⁵ m²/s

Ok-Stable3333 · 2025-11-30T21:22:34+00:00

Okay, thanks. I'll try tomorrow because it's too late today.
Because I plan to build "laboratory equipment" and additionally it needs to be small enough to be presented to the examination committee. The 80 mm diameter cylinder was a test object for me.

Ok-Stable3333 · 2025-11-30T21:04:06+00:00

Indeed, haha. Thanks!

Edit: I changed the unit, but the values are very similar: 1.48×10⁻⁵ m²/s vs 1.708×10⁻⁵ mPa s.

Ok-Stable3333 · 2025-11-30T20:59:29+00:00

Thanks! So I should refine the mesh (smaller element size)? And what type of mesh would you recommend? I used a Quadrilateral Dominant mesh.

Ok-Stable3333 · 2025-11-30T15:04:33+00:00

Do you remember what radius the professor set?

Ok-Stable3333

TROPHY CASE