Internal:CDT3D SU2

General

• Oct 30 2018 presentation [1]
• Pointwise and SU2 [2]
• Paper : Construction of Prism and Hex Layers from Anisotropic Tetrahedra [3] see also [4]

Interesting points from SU2 developers

• linear scalability is expected if there are at least 5000 grid points per core. [5]

BL discussion with Beckett

For the target method RANS+LES boundary layer is needed to resolve the turbulance. Specifically for the Delta wing see thje link bellow for more details of the simulation. During the fine-tunning of the mesh it it expected to require changes mostly in the boundary layer, since, this is where the turbulance near the boundary ( which we are trying to resolve) lives.

Boundary layer is usually given the following restrictions:

• Δs: Distance of first cell from the solid surface
• Thickness of the boundary layer
• Stretching factor / number of layers

More Links

• Open source tool for creating meshes https://www.salome-platform.org/
• European Knowledge base for CFD simulations [6]
• Project page in the site above for the Delta wing case [7]

Delta Wing Project AIAA Aviation 2019

Time required for the first mesh (from Becket) :

I just checked the record: for 15 CTU in the periodic steady state region (where we compute mean flow and turbulent stats), it took 3 days and 7 hours on 480 processors. The transient is about another 10 CTUs and that took roughly another 2 days.

So in total: 25 CTUs for about 5 days. We are computing longer than the Go4Hybrid guys tho: they use 7+13=20CTU.