Vicous layer on sharp corners

Use of the platform
1

I have been working on Salome with this geometry in order to test the behaviour of viscous layer creation on sharp corners. The issue I am having is that the transition on these corners is simply too abrupt, as can be seen in the following image:

Captura de tela 2024-09-24 190108 (2)
Captura de tela 2024-09-24 190108 (2)1298×589 95.6 KB

The mesh I am generating on Salome is then being compared to ANSA, and I am trying to find a way in which I can make the corner transition smoother. In ANSA, this fucntion is called “Smooth normal vectors”, but I cannot seem to find anything in Salome that does the same. Does anyone know of a workaround?

Thank you in advance.

2

have you tested the surface offset+smooth on the viscous layers?
image

3

Hey, thanks for your reply. I tried the other methods but they give me the same result. I am mainly interested in the node offset, as it works better for my specific application. The parameters I used are the following:

Mesh_1 (Domain – FF/SYMMETRY):

  • Algorithm: NETGEN 1D-2D-3D

  • Hypothesis: NETGEN 3D Parameters

    • Max size: 1000
    • Min size: 10
    • Fineness: Moderate

  • Viscous layer:

    • Total thickness: 111.3
    • Number of layers: 53
    • Stretch factor: 1.2
    • Extrusion method: Node offset
    • Specified faces are: Faces with layers (walls)
    • Faces with layers (walls): “WALL” group

  • Sub-mesh_1 (Geometry – WALL)

    • Algorithm: NETGEN 1D-2D
    • Hypothesis: NETGEN 2D Parameters
      • Max size: 25
      • Min size: 1
      • Moderate

The geometry has 800mm in length.

I need it to look something like this:

image
image1281×772 248 KB