20.500.12556/RUL-158305 The kinetic energy transfer analysis between the gas and the liquid in flow-focusing of the micro-jet The present study uses computational fluid dynamics to analyse the kinetic energy transfer from the gas to the liquid phase, considering the significant influence of surface tension. The considered situation is the gas dynamic virtual nozzle, where the co-flowing gas focuses and accelerates the liquid jet. The experimentally validated half-space three-dimensional gas-liquid mixture model addresses the unsteady, incompressible, isothermal, Newtonian, low-turbulent two-phase flow. The continuity, momentum and the k-ω SST turbulence model are employed to resolve the fluid flow. The numerical solution is based on the finite volume method and volume of fluid approach with a geometric reconstruction scheme for tracking the gas-liquid interface. The total pressure of the gas, an indication of its energy, is tracked along streamlines and analysed spatially and temporarily. It is found that around 50 % of the focusing gas energy is transferred to the liquid jet before its breakup for the nozzle with Weber number 3.5, and gas and jet Reynolds number 1842 and 108, respectively. The linear regression between jet length and energy transfer efficiency is discovered. The presented methodology represents an essential tool for analysing and understanding the energy transfer process between the focusing gas and the liquid jet. computational fluid dynamics simulation numerical method two-phase flow računalniška dinamika tekočin simulacija numerične metode dvofazni tok true false true Angleški jezik Slovenski jezik Neznano 2024-06-04 09:49:57 2024-06-04 09:50:01 2025-04-21 11:39:52 0000-00-00 00:00:00 2024 0 0 6 str. Vol. 2766, art. 012075 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 532:519.62 1742-6596 10.1088/1742-6596/2766/1/012075 197666051 197654787 Kovacic,_Sarler-_The_kinetic_energy_transfer_analysis_between_the_gas_and_the_liquid_in_flow-focusing_of_the_micro-jet.pdf Kovacic,_Sarler-_The_kinetic_energy_transfer_analysis_between_the_gas_and_the_liquid_in_flow-focusing_of_the_micro-jet.pdf 1 EFC516C5331B4FD5E5C6C94972D8D1A5 9f1b9ba3a47cc2e06bd3ace42c36e33b1c7398b3dacb565227876dc412561b9b 81884cef-2247-11ef-90a3-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=185854 https://iopscience.iop.org/article/10.1088/1742-6596/2766/1/012075 1 0da72e09-2247-11ef-90a3-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=185853 Fakulteta za strojništvo 0 0 0