Dear Sir or Madam, I have the following request. I would like to make a simulation of the flow of a high speed train wich reaches a closed end for my bachelor thesis. I want to do it in Openfoam. The reason why im asking this question in this forum is because the video is from the CFD-Support Youtube channel. In a Youtube video from you with the following title Train in Tunnel Passing Sudden Cross-section Change - CFD OpenFOAM® simulation with the follwing URL https://www.youtube.com/watch?v=Gyr8Y7I16KA a similar problem was shown. Is there a possibility to learn more about it? Some more Information about the dicts of the Simulation would be highly appreciated to build my simulation. Best regards Benedikt Bihlmayer