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 13 of 13 for “"capillary waves"”.
-
Understanding of weak turbulence of capillary waves
… statistical property of an ensemble of waves in weakly nonlinear interactions. In the wavenumber k domain, the WTT steady-state analytical solution yields a power-law inertial-range spectrum I - ka, with a constant energy flux P from large forcing scales to small dissipative scales. Over …
-
The instability of axial-symmetric gravity-capillary waves generated by a vertically-oscillating sphere
… vertically, axial-symmetric outgoing ring waves are generally expected to be produced. Laboratory experiments, however, show that when the oscillation amplitude of the sphere exceeds a threshold value, the axial-symmetric waves abruptly transfigure into asymmetric waves. This problem is …
-
Vibration-Induced Atomization Of Liquids With Application To Ultrasonic Medical Nebulizers
… inhalation therapy. The formation of standing waves on the surface of this sort of thin film have an oscillating frequency that is roughly half the driving frequency and a wavelength that is equal to a function of the ultrasonic driving frequency, fluid density, and interfacial surface tension. …
-
Nanoscale self-assembly and nonequilibrium transformation of colloidal nanoparticles visualized by liquid-phase TEM
… surface fluctuates due to thermally excited capillary waves, based on which we were able to measure the interfacial energy of such supracrystals, again enabled by our in-situ liquid-phase TEM imaging. The supracrystal surface has a roughness driven by the thermal capillary waves, which we …
-
Intricate Dynamics of Droplet-Substrate Interactions Beyond Conventional Limitations
… offering insights into the interplay of thermal, capillary, and inertial forces that govern these phenomena. The evaporation of sessile water droplets on heated microstructured superhydrophobic surfaces is experimentally and theoretically explored across a temperature range of 20 °C to 120 °C. A …
-
How water meets a hydrophobic surface: reluctantly and with fluctuations
… the boundary fluctuates with something akin to capillary waves. We have also investigated the dependence of the static and dynamic properties of the hydrophobic/water interface on variables such as temperature, contact angle, pH, dissolved gasses, and sample quality, among others, in a hope to …
-
The Effects of Variable Parameters on the Behavior of Initial Wind Waves
<p>The generation mechanism of short wind waves is generally thought to be a viscous instability at the air-sea interface. The short, regular waves arising from a sudden wind on a still water surface have a dispersion relation which is characteristic of gravity-capillary waves. The effects of …
-
Nonlinear dynamics of three-dimensional solitary waves
… at non-zero wavenumber, kmin. Examples include waves on the surface of a liquid in the presence of both gravity and surface tension, flexural waves on a floating ice sheet, in which case capillarity is replaced by the flexural rigidity of the ice, and internal gravity waves in layered flows in …
-
A Hydrodynamic Sensory Antenna Used By Killifish for Nocturnal Hunting
… is able to hunt in darkness by detecting surface capillary waves with the lateral-line system atop its head. This cephalic lateral line consists of 18 stereotyped mechanosensitive neuromasts, each bordered by fleshy ridges. Each neuromast has a single axis of sensitivity along its longitudinal …
-
Enhanced droplet spreading due to thermal fluctuations
… compared the continuum predictions of capillary wave relaxation in thin fluid film interfaces to the behavior of molecular simulations. We found that for all but the smallest length scales in the free-fluid interface, continuum predictions matched that of the molecular simulations for …
-
The fluid mechanics of floating and sinking
… and study the asymptotic properties of the capillary waves generated by impact. We also show how the interfacial deformation slows down the impacting body. We use a boundary integral simulation to study the motion at later times and determine the conditions under which the object either …
-
FLOW FORMING OF CAPILLARY INTERFACES: DROP IMPACT AND THE MOBILE CONTACT LINE
… apart. Our focus is on drop depositions in the capillary-ballistic regime. During drop impact, the falling drop’s pre-impact energy transforms into fast-time scale motion of the three-phase contact-line (CL). The CL then comes to rest and the LG interface oscillates, viscously dissipating …
-
Computation of the rise or fall of a drop through a suspending liquid with no mass transfer: Axisymmetric, transitional and complex regimes
… two-dimensional circular interface, damped capillary waves. We also consider relaxation to Laplace’s equilibrium for a spherical interface, neglecting mesh and interface motion. Two different approaches to account for interfacial tension are demonstrated for the spherical interface: one …