This is a collection of topical hydrodynamic problems of different degrees of complexity, which are not ripe for mathematical modelling or for numerical calculations. Hints for obtaining solutions are given. Attention is concentrated on unexpected analogies between phenomena of different kinds and on establishment of new links between what are at first sight unrelated or isolated facts.

PACS: 42.11.+j, 47.27.−i, 47.32.−y (all) DOI: 10.1070/PU1995v038n03ABEH000076 URL: https://ufn.ru/en/articles/1995/3/d/ A1995QU24300004 Citation: Betyaev S K "Hydrodynamics: problems and paradoxes" Phys. Usp. 38 287–316 (1995) BibTexBibNote ® (generic)BibNote ® (RIS)MedlineRefWorks Оригинал: Бетяев С К «Гидродинамика: проблемы и парадоксы» УФН 165 299–330 (1995); DOI: 10.3367/UFNr.0165.199503d.0299