WebThe near-and far-field break-up and atomization of a water jet by a high-speed annular air jet are examined by means of high-speed flow visualizations and phas. ... model explains qualitatively the dependence of the shedding frequency on the air/water momentum ratio in both initially laminar and turbulent water jets. The role of the secondary ... WebNov 18, 2012 · A two-dimensional computational model has been developed to study the evolution and breakup of a viscous laminar liquid jet, using a boundary-fitted curvilinear …
Break-up and atomization of a round water jet by a high-speed …
WebThe laminar–turbulent transition in a forced laminar separation bubble is dominated by this vortex formation and breakup process. Using numerical and experimental data, we give an in-depth characterization of this process in physical space as well as in Fourier space, exploiting the largely periodic character of the flow in time as well as in ... WebNov 14, 2016 · It has been found that at low velocity, the instabilities of surface waves cause a final breakup of the laminar jet in accordance with Rayleigh's instability theory (Rayleigh 1945, Arai and Amagai 1999). Large scale longitudinal vortex motions initially generate at the core of the columnar liquid jets due to the relaxation of axial liquid ... the pink box makeup
Two-dimensional modeling of viscous liquid jet breakup
WebJan 27, 2008 · 1.4. if turbulent unsteady/steady vof is applied to a laminar jet will it supress the "instabilities"? 2) Having turbulent jet: ... The jet break-up occured only when there was a fixed difference between the veocity of jet and ambient. good luck By the way, you can use laminar flow. Apparently, it seems to be easier to produce waves WebMay 15, 2011 · They found three breakup regimes: bubble (hollow drop) formation, annular jet formation, and atomization. Theoretically, Ibrahim and Jog ( 2008 ) used a … Webthe other breakup mechanisms, the liquid flow is laminar, and the liquid delivery tube is long and straight to ensure that there is no cavitation inside the nozzle. The breakup length is one of the most important characteristics of the co-annular non-swirling and swirling jets. In terms of the co-annular non-swirling jet, the breakup length of the the pink box bakery