[ric1]

Hi everyone, I want to start using OpenLB but I'm new to open source CFD softwares and C++ coding, so I'm looking for some help. I've read the "OpenLB User Guide" but for a beginner it isn't the easiest document to understand. I want to analyse a helmet with the intention of studying its drag force. I’ve tried to modify the .stl file of the cylinder3d example (I changed the empty space of the cylinder for the shape of the helmet), but the simulation didn’t run. I also made an exact copy of the example model in a 3D software, and the simulation also didn’t work (it looks like it only runs with the original .stl file). Do you know what the problem is and what would be the best way to analyse the helmet (or any costum model)?

Additionally, I’m using paraview to see the results and i would like to know if there is a way to visualize the streamlines of the fluid and to verify the values obtained for the drag at specific points of the geometry that is being analised.

Thank you in advance!