Here is a YouTuber who is making a physically based audio engine using fluid dynamics (demos so far for various engines, a trumpet, a steam whistle, dev videos)

Here is a YouTuber who is making a physically based audio engine using fluid dynamics (demos so far for various engines, a trumpet, a steam whistle, dev videos) https://www.youtube.com/channel/UCV0t1y4h_6-2SqEpXBXgwFQ https://www.youtube.com/channel/UCV0t1y4h_6-2SqEpXBXgwFQ A lot of what you wrote reminded me of what he is working on - the trumpet sim is not entirely accurate yet but watching those reflections bounce and forth like you describe is very interesting. Trumpet Video: https://www.youtube.com/watch?v=rGNUHigqUBM&t=87s https://www.youtube.com/watch?v=rGNUHigqUBM&t=87s