ALM Being applied to curved (Structured transfinite mesh) or unstructured quadrilateral mesh ?

[StepTang17]

Hi there,

I am writing to ask that after looking at the source code for the ALM, I noticed the comment being cited:

! Search in linear (not curved) mesh (Faster and safer)
! For AL the mesh is expected to be linear

Based on these comments does it mean either the following:

1. ALM cannot be applied to any curved meshes, even structured transfinite mesh such as the region prior to the leading edge (C-grid mesh case) of the NACA 0012 mesh in the test example meshes
2. ALM cannot be applied to an unstructured mesh even quadrilateral unstructured mesh

I am trying to test ALM to be applied in conjunction with a NACA 0012 for example, but realized that mostly ALM is applied in conjunction with IBM. However, I am concerned with IBM's ability to fully capture mask resolution with NACA 0012 so was considering going down the mesh resolved route.

Thank you

[oscarmarino]

Hi,
ALM is a 3D wind turbine model, replacing the blade geometry by source terms. I do not understand how is your setup, coupling ALM in a NACA simulation, but in general it works for any quadrilateral unstructured mesh that are in the interior of the domain, where the elements are not curved (most of times). You can always save the source term in the whole domain, and then in paraview you can see where is being applied. We have used the IBM to represent the tower and nacelle of the wind turbine, but it was not intend to capture the boundary layer or any very detailed flow features.