Vortex physics - Some papers and links
A compendium about vortex physics from the Swiss Association for Free Energy (SAFE) (in German):
Part 1: https://www.safeswiss.ch/sites/default/files/kompendium_wirbelphysik_v1_teil_1.pdf
Part 2: https://www.safeswiss.ch/sites/default/files/kompendium_wirbelphysik_v1_teil_2.pdf
Website of Prof. Dr.-Ing. Konstantin Weyl: https://www.meyl.eu