20.500.12556/RUL-178214 Emergence and dynamics of gas-accelerated liquid sheets insights into liquid chain formation This study examines the behavior of liquid chain, open rim, and transitional jet–liquid chain regimes in gas-accelerated liquid micro-sheets using experimentally validated numerical simulations. The simulations employ the finite volume method with a volume-of-fluid framework to resolve compressible ideal gas flow impinging on a Newtonian, laminar liquid jet under atmospheric conditions. Adaptive mesh refinement is used to resolve the gas–liquid interface. The validation of the model is performed based on a purpose-built experimental setup over the range of gas–liquid momentum flux ratios 0.03 < MFR < 2.6, and Weber numbers, evaluated at the liquid capillary inlet, 3.8 < We < 49, achieving an agreement of the simulated liquid-sheet shape below experimental uncertainty. Three typical flow regimes are explained by the interplay of gas momentum, liquid inertia, and surface tension, scaled by the liquid-sheet rim Weber number (We▫$_{rim}$▫), based on rim curvature and the rim transverse velocity. The transitional jet–liquid chain regime occurs at We▫$_{rim}$▫ < 0.1; where the surface tension dominates, result- ing in only a slight change of the liquid jet cross section. In the liquid chain regime (0.1 < We▫$_{rim}$▫ < 1) gas inertia forms the sheet, then surface tension bends the rim inward, and transverse momentum transfer forms an orthogonal secondary link. In the open rim regime (We▫$_{rim}$▫ > 2), dominant rim inertia prevents sheet closure. The Weber number (We), based on the nozzle inlet parameters, can predict the liquid chain regime in the range 1.5 ≤ MFR We▫$^{0.84}$▫ ≤ 4. This relation provides practical guidance for stable liquid chain operation. ideal gas physical quantities computer simulation finite volume methods adaptive mesh refinement gas liquid interfaces fluid dynamics fluid flows fluid jets multiphase flows idealni plin fizikalne veličine računalniška simulacija metoda končnih volumnov adaptivno zgoščevanje mreže plinsko kapljevite meje dinamika tekočin tokovi tekočin kapljeviti curki večfazni tokovi true false true Angleški jezik Slovenski jezik Članek v reviji 2026-01-21 13:06:20 2026-01-21 13:06:26 2026-01-22 04:36:26 0000-00-00 00:00:00 2026 0 0 25 str. issue 1, art. 012008 Vol. 38 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 532.5 1089-7666 10.1063/5.0311193 265567747 Kovacic_..._Emergence.pdf Kovacic_..._Emergence.pdf 1 F181985F8D67B5628FA68FADD6A39EB5 6739ade38269d753ed00106fdf5b18ccf924c2013aa455d5f924344d009148f0 63b5ce29-f6c3-11f0-bf92-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=225832 https://pubs.aip.org/aip/pof/article/38/1/012008/3377692/Emergence-and-dynamics-of-gas-accelerated-liquid 1 8dfbdbeb-f6c1-11f0-bf92-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=225829 Fakulteta za strojništvo 0 0 0