20.500.12556/DKUM-98164 Hydrodynamic cavitation in Venturi channels with different divergent angles Hidrodinamička kavitacija u Venturi kanalima sa različitim divergentnim uglovima Hydrodynamic cavitation occurs in hydraulic systems when flow restrictions increase velocity and decrease pressure below vapor pressure. To study cavitation phenomena, simplified geometries such as Venturi channels are commonly used for experiments and numerical modeling. A Venturi channel gradually narrows to a throat before expanding at a divergent angle, influencing cavitation characteristics. This study experimentally investigates the effect of divergent angles on cavitation formation and dynamics. Three 3D-printed inserts with different divergent angles were tested in a plexiglass cavitation tunnel. High-speed imaging (20,000 fps) with a Photron Fastcam SA-Z captured cavitation behavior, and an in-house Python script analyzed vapor projected area (a proxy for vapor volume) and cavity length. Results show that increasing the divergent angle reduces attached cavity length but produces larger detached cavitation clouds that travel farther before collapsing. The total cavitation projected area increased with larger divergent angles due to upstream movement of the cloud shedding point. These findings highlight the significant influence of divergent angle on cavitation behavior, with potential implications for cavitation-induced effects like erosion. cavitation Venturi high-speed video cloud shedding image postprocessing kavitacija visokohitrostni video odcepljanje oblakov poobdelava slik true false true SCIndeks Angleški jezik Srbski jezik (cirilica) https://scindeks.ceon.rs/Article.aspx?artid=1821-44872502037B Članek v reviji 2026-05-21 14:10:04 2026-05-21 14:10:05 2026-05-22 03:16:12 0000-00-00 00:00:00 2025 0 0 Str. 37-42 issue 2 Vol. 29 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2025-03-17 2025-05-23 2026-04-21 620.193.16:004.92 276351491 10.5937/jpea29-58258 2956-0195 https://scindeks.ceon.rs/Article.aspx?artid=1821-44872502037B&lang=en 1 00e4931a-550e-11f1-80bc-00155d580e34 https://dk.um.si/Dokument.php?lang=slv&id=206313 1821-44872502037B.pdf 1821-44872502037B.pdf 1 218D5E140D564CA4594A5D473ACAF29F 7e7f47975fea7733c2217059213536da282f3b0293acf9e664529728824de1b5 48b1124c-550e-11f1-80bc-00155d580e34 https://dk.um.si/Dokument.php?lang=slv&id=206314 Fakulteta za strojništvo 0 0 0