There were a few general questions regarding my previous experience with CFD software, a few about my hobbies, and they were particularly interested if I had any experience in the area mentioned in the vacancy description (I hadn't, but operated with the same principles with slightly different stuff - hydrodynamics vs. aerodynamics). Overall, the interviewing people were friendly. They also gave me a few practical advice regarding different CFD software. I did not receive any helpful feedback from them regarding the interview.