Hi, all.I tried to make a model with multiple BHEs, but the grid between each BHE was very small. I tried to add some points to optimize the grid, but the result was problematic. The grid between BHE is still relatively dense (especially when BHE is relatively close). Can the setting of BHE not affect the grid size?
Best regards.
Hi greyyaa,
Theoretically you can create the mesh as you what. As far as the BHE are marked as line elements, OGS will pick them up and the simulation will run.
However, we coded the python script with a restriction on the element size in direct vicinity of the BHE. This is due to the reason that this element size has an impact on the accuracy of simulation result. I recommend you to read the paper of Diersch (2011b).doi:10.1016/j.cageo.2010.08.002
In section 3.3, it is explained why a control on the element size is needed.
Best,
Haibing
Thank you very much for sharing. I will study this paper to gain a deeper understanding of BHE grids.
Best regards!