Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 24 for “"liquid drops"”.
-
Coalescence Behaviour of Liquid Drops at Solid Surfaces
… beds has been reviewed. The fundamentals of liquid-liquid and solid-liquid coalescence, and characterisation of 'wetting' or 'non-wetting' behaviour in liquid-vapour-solid systems by contact angles are summarised. Contact angle measurements have been extended to liquid-liquid- solid systems. …
-
Fluid mechanics of liquid drops and thin-films
The natural world is rich with fluids, like liquids, polymers, gels, which are governed by physical laws of motion. The present dissertation is a detailed theoretical, experimental, and numerical study of the complex phenomenon exhibited by liquid drops and liquid thin-films. Studying these systems …
-
Static and Dynamic Behavior of Liquid Drops in Electric Fields
… of bitstreams: 1 Static and Dynamic Behavior of Liquid Drops in Electric Fields.pdf: 1606922 bytes, checksum: 4fe071bd468ab7a3b6fd0d29fae8e750 (MD5)
-
Theoretical And Experimental Studies On The Instability Of Charged Liquid Drops
… properly predict the breakup of highly charged liquid droplets, a complete understanding of their behavior at the Rayleigh limit is necessary. An analytical model has been developed for a conductive spherical drop charged to its Rayleigh limit which predicts the final state just after the …
-
Modeling and Scaling Electrostatic Effects in Dilute Solid-Gas Suspensions
… investigation of thermocapillary convection in liquid drops is presented. The experiments were conducted on a pendant drop (approximately 1 mm in height) suspended from a thermocouple junction and heated from above. A theoretical model was developed to assist in the interpretation of the …
-
Phase-Field Modeling of Oscillatory Wetting Phenomena with Contact Angle Hysteresis
… the contact line velocity and contact angle of liquid drops on an oscillating substrate that display contact angle hysteresis. Of particular interest in this experimental study is the analysis of the dependence of contact angle deviation on contact line velocity. Indeed it is found that for …
-
Studies of the drying of particulate slurries
… relating to the drying characteristics of pure liquid drops and particulate slurry drops has been reviewed. The experimental investigation was, therefore, divided into three parts: Pure water drops, Aqueous sodium sulphate decahydrate drops, and, Slurry drops from nine detergent formulations. …
-
Mechanisms of heat and mass transfer to and from single drops freely-suspended in an air stream
… tunnel was used to freely suspend individual liquid drops of 5 mm initial diameter to investigate drop dynamics, terminal velocity and heat and mass transfer rates. Droplets of distilled, de-ionised water, n-propanol, iso-butanol, monoethanolamine and heptane were studied over a temperature …
-
Imaging the shapes and dynamics of superfluid helium nanodroplets
… nanodroplets resemble those of rotating normal liquid drops. Also the evolution of the droplet shapes from spherical to oblate, prolate, and even two-lobed configurations is observed. In the second part of the experiment, scattering images of xenon doped helium nanodroplets are recorded after …
-
Production of uniform micropellets of hydrogen and hydrogen pellet injection on ORMAK
… of hydrogen by the acoustic disintegration of a liquid jet. The liquid drops were frozen and injected into vacuum at a speed of 95 M/sec. The pellet injection apparatus was mounted on ORMAK a tokamak magnetic confinement device located at Oak Ridge National Laboratory. Hydrogen pellets were …
-
LATTICE BOLTZMANN SIMULATION OF BINARY DROP COALESCENCE AT LOW WEBER NUMBER
… the early-time coalescence dynamics of two liquid drops. The two drops approach each other at a very low Weber number (We) and the coalescence process is driven by surface tension. When the two drops come into contact, the curvature diverges and causes infinitely large surface tension …
-
On the electrohydrodynamics of drop extraction from a conductive liquid meniscus
… use of an electric field in the extraction of liquid drops from a capillary orifice or nozzle. The motivating application is ink jet printing. Current drop-on-demand ink jets use pressure pulses to eject drops. Literature on electrostatic spraying suggests that by using an electric field, drops …
-
Classical models of heavy-ion collisions
… are also discussed. Collisions between cold drops, performed at various energies, are performed using classical molecular dynamics. These drops have an EOS which is similar to that of nuclear matter. Comparisons between collisions and disassemblies of hot, liquid drops indicate that …
-
Electric field based fabrication methods for multi-scale structured surfaces
… it is critical to understand how moving liquid water droplets will behave when they encounter these modified surfaces. We investigate drop impingement on porous thin films produced by BDA and EPD in order to understand the effects of surface structure and chemical properties on droplet …
-
Numerical study of the nonlinear dynamics of the acoustic drops and bubbles
The dynamics of liquid drops and bubbles held together by surface tension and perturbed by small disturbances is of great interest to many researchers. Its essential physical nature is characterized by a nonlinear moving-boundary problem complicated by the interfacial stress interaction between two …
-
High-fidelity simulation and data-driven modeling of drop aerobreakup.
Aerobreakup of liquid drops is essential to various spray applications like fuel injection, drug delivery, spray painting, among others. Due to the highly transient nature and the wide range of spatial scales involved, experimental diagnostics is challenging and high-fidelity numerical simulation …
-
Transport mechanisms and wetting dynamics in molecularly thin films of long-chain alkanes at solid/vapour interface : relation to the solid-liquid phase transition
… the alkanes wet partially the surface (drops). In this temperature range the substrate surface is covered with a molecularly thin ordered, solid-like alkane film ("surface freezing"). Thus, the alkane melt wets its own solid only partially which is a quite rare phenomenon in nature. The …
-
The dependence of arctic mixed phase stratus ice cloud microphysics on aerosol concentration using observations acquired during ISDAC and M-PACE
… the cold second indirect effect. By comparing liquid and ice particle size distributions (SDs) measured by different probes and by conducting mass closure tests where masses derived from size and shape distributions are compared against mass contents measured by bulk probes, a best estimate of …
-
Competitive Nucleation in Nanoclusters
… events, along with the overall rate at which liquid drops freeze to any structure, allows the rate of formation for each structure to be calculated. The rate of formation of icosahedral structures is about an order of magnitude higher than the rates for other structures. Also, as the size of …
Page 1 of 2