... two-phase flows surface tension Navier–Stokes equation computational fluid dynamics Many important industrial problems involve multiphase fluid flows [ 1–4 ]. The multiphase fluid flows are related to many physical problems, such as the non-Newtonian flow, microtube flow, droplet impact...

... tension serves to get finer droplets and wider droplet spatial distribution. Small liquid density, surface tension and viscosity are benefit for getting higher atomized droplet velocity. References 1 Lefebvre , A. H. , Atomization and Sprays, Purdue University, West Lafayette, Indiana...

... study for the effects of different parameters including volumetric flow rate, downstream height, viscosity and gravity on the jump radius, and its characteristics is carried out. Compared with previous works on CHJ available in the literature, employing the VOF method considering the surface tension...

... in the viscous forces results in enhanced spreading of the film followed by a more rapid recession. An increase in surface tension results in reduced spreading of the film, followed by a more rapid recession. Model predictions of film diameter as a function of time were larger than corresponding experimental...

...–Plesset equation including the effects of the surface tension, the viscosity and compressibility of fluid, the thermal conduction and radiation, the phase transition of water vapor at the interface, and the chemical reactions. The cavitation flow around a hydrofoil is simulated to validate the macroscopic...

... to both standalone LS and VOF and verify it versus a selection of test cases. VOF is already available in FLUENT , so we implemented an LS method into FLUENT via user defined functions. The level set function is used to compute the surface tension contribution to the momentum equations, via curvature...

...H. Lan; J. L. Wegener; B. F. Armaly; J. A. Drallmeier Three-dimensional (3D)—steady-developing-laminar-isothermal—and gravity-driven thin liquid film flow adjacent to an inclined plane is examined and the effects of film flow rate, surface tension, and surface inclination angle on the film...

... an intermediate bubble size regime with a trapped-bubble array (TBA) formed in a tap water environment using electrolysis to grow and maintain bubbles in thousands of millimeter-sized holes on a solid surface. We show that even though surface tension is sufficient to stabilize bubbles in a TBA against hydrostatic...

... and hydrophobic regions. The pattern size and the surface tension of the fluid are found to have significant influence on the capillary phenomena in the patterned microchannel. Smaller pattern size produces enhanced capillary effect with DI water, whereas no appreciable gain is observed for ethanol. The magnitude...

... is positive or negative is investigated. The film flow is influenced by gravity, mean surface tension, and thermocapillary forces acting along the free surface. The coupling of thermocapillary instability and surface-wave instabilities is studied for two-dimensional disturbances. A nonlinear evolution...

...W. Saleh; R. C. Bowden; I. G. Hassan; L. Kadem The onset of gas entrainment in a single downward discharge, from a stratified gas-liquid region, was modeled. The discharge was modeled as a point-sink and Kelvin–Laplace’s equation was used to incorporate surface tension effects. Consequently...

...Tomiichi Hasegawa; Masahiro Karasawa; Takatsune Narumi Surfactant solutions are usually used under conditions accompanied by transient dynamic surfaces, and therefore the dynamic surface tension (DST) is important in many industrial processes. Theories regarding DST have been developed exclusively...

...M. A. Friedrich; H. Lan; J. L. Wegener; J. A. Drallmeier; B. F. Armaly The behavior of a shear-driven thin liquid film at a sharp expanding corner is of interest in many engineering applications. However, details of the interaction between inertial, surface tension, and gravitational forces...

... demonstrating surface tension and wetness effects. A total of eight cases were investigated for single, dual, and triple discharges, with onset occurring in the branch closest to and above the gas-liquid interface. Wall curvature effects were discussed through comparison with previous flat wall studies...

... are validated with Maxwell constructions of liquid-vapor coexistence densities, theoretical relationship of variation of surface tension with temperature, theoretical planar interface density profiles, Laplace’s law of capillarity, dispersion relationship between frequency and wave number of capillary waves...

...Yiqing Yuan; Eysion A. Liu; James Hill; Qian Zou A mathematical model describing the hydrodynamics of the flow within a disengaged wet transmission clutch is presented. The primary improvement of this model over the existing ones is the inclusion of the surface tension effect, which is expressed...

... is achieved in an oil environment. 06 04 2006 02 06 2006 mercury (metal) liquid metals electrohydrodynamics wetting drops two-phase flow contact angle contact angle electrowetting hysteresis liquid metal surface tension When a voltage is applied between a liquid...

...B. Xu; X. Ai; B. Q. Li Stabilities of surface-tension-driven convection in an open cylinder are investigated numerically. The cylinder is heated laterally through its sidewall and is cooled at free surface by radiation. A seeding crystal at constant temperature is in contact with the free surface...

.... The influence of viscosity, surface tension, and rotation rate on the growth rates and most unstable wavenumbers associated with both types of liquids are also examined. 27 11 2005 09 03 2006 flow instability jets rotational flow orifices (mechanical) confined flow waves viscosity...

... with the treatment of surface tension effect at the gas-liquid boundary by the continuous surface force scheme. The volume-of-fluid method along with the piecewise linear interface construction technique is implemented to describe the interfacial movements. The time evolution of droplet meniscus shape is predicted...