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.
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Showing 1 to 7 of 7 for “"Oscillating drop"”.
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Phase-Field Modeling of Oscillatory Wetting Phenomena with Contact Angle Hysteresis
… 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 small …
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Thermophysical and Thermochemical Property Measurement and Prediction of Liquid Metal Titanium Alloys with Applications in Additive Manufacturing
… and Ti-6Al-4V-10Mo, through a container-less oscillating drop technique at the NASA Marshall Space Flight Center. Ti-Al-V-Mo quaternary alloy was studied for laser-based 3D printing, and showed improved mechanical properties over traditional β Ti alloys. Results for elemental Ti, Ti-xAl, and …
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Modeling of and experiments on electromagnetic levitation for materials processing
… surface tension and viscosity of liquid metal droplets were performed. The models use a 2-D axisymmetric formulation, and use the method of mutual inductances to calculate the currents induced in the sample. The magnetic flux density was calculated from the Biot-Savart law, and the force …
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A Parallel Boundary Conforming Method on Adaptive Moving Meshes for Multiphase Flows
… involving flow past a circular cylinder, an oscillating drop/bubble and a rising bubble are used to examine the accuracy of the parallel flow solver on both fixed and moving meshes. The parallel performance of the adaptive moving mesh method, flow solver and flow solver on adaptive moving …
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Static and dynamic properties of soluble surfactants at the air/water interface
Amphiphilic molecules contain a hydrophilic headgroup and a hydrophobic tail. The headgroup is polar or ionic and likes water, the tail is typically an aliphatic chain that cannot be accommodated in a polar environment. The prevailing molecular asymmetry leads to a spontaneous adsorption of …
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Effect of Non-Ionic Surfactants and Nano-Particles on the Stability of Foams
… may be attributed to the presence of hydrophobic force, the magnitude of which has been estimated using the Reynolds lubrication approximation. It has been found that the attractive hydrophobic force was substantially larger than the attractive van der Waals force, which may explain the …
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A motion of freely oscillating droplet of a yield stress fluid: analysis and numerical studies
… of free small-amplitude oscillations of a droplet of a yield stress fluid under the action of surface tension forces. The problem is treated both analytically and numerically. In particular, we address the question if there exists a finite stopping time for an unforced motion of a yield …