Learning Forum

[Joel Smith]

Hello,

I am trying to create a mesh for a cylinder of diameter 0.03127m and an aspect ratio of 1. I am simulating rayleigh-bernard convection inside a cylindrical cavity where the bottom surface is 10 degrees warmer than the top surface. I first simulated the flow with no partition and now want to add the partition but I am getting an error when I try to generate the mesh. The partition is a cuttout 0.1mm thick and 1.5mm from the top and bottom surface. I have an inflation feature that covers the height of my thermal boundary layer (approx 3.5mm) and I am using the multizone feature to keep an hexahedron element shape. Is there a way I can keep the multizone with the partition added?

 

[Rob]

What did you inflate? You may find you need to sweep the mesh from one end to the other (read up on Sweep inflation requirements) and then use boundary adaption if the end caps require additional refinement. 

[Joel Smith]

I'm inflating the rows from the top and bottom surfaces to the edge of what I have calculated to be the thermal boundary layer (approx 5mm with Nu = 3, working with a low Rayleigh number fluid). I validated the model without the partition with hexahedron elements and now want to run it with the partition of width 0.1mm. Without the multizone feature the inflation bends around the added partition:

[Rob]

Have a look at the inflation definition. I suspect you want to sweep the volume and then refine the end caps.