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 16 of 16 for “"liquid bridge"”.
-
Multi-Scale Model of the Stability of a Laterally Heated Liquid Bridge Under the Influence of an Axial Magnetic Field
Thermocapillary flows, occurring in floating-zone semiconductor crystal growth, are studied using numerical and analytical linear stability analyses. In this process, a polycrystalline feed rod is passed through an optical heating source, where it melts and then re-solidifies into a single crystal. …
-
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 …
-
Rheological characterization of lubricants in automotive industries through development of a novel capillary breakup extensional rheometer
… the experiments. In this experimental setup, a liquid sample is rapidly stretched between two coaxial plates, which leads to the formation of a liquid bridge in the middle connecting hemispherical liquid reservoirs at each end. The temporal evolution of the radius of the resulting liquid bridge …
-
Modeling the Mechanical Effects of Liquid Mediated Adhesion Between the Human Vocal Folds
… of the vocal folds results in the formation of a liquid bridge. The adhesion equation was validated using experimental data, and simplified to a one-dimensional approximation with an included correction factor that adjusted the predicted pressure in situations where the one-dimensional …
-
Ternary Flow Simulation Based on The Conservative Phase Field Lattice Boltzmann Method
… upon contact the oil spreads onto the drop’s liquid-air interface, first forming a liquid bridge whose curvature drives an apparent drop spreading motion and later fully coating the drop. Inertially and viscously limited dynamics were explored using the Ohnesorge number Oh as a function of …
-
A moving mesh method for non-isothermal multiphase flows
… Our method is then applied to investigate the liquid bridge breakup with thermocapillary effect. The non-isothermal liquid bridge breakup in the viscous and inertial regimes are studied. It has been found that the inertial regime breakup exhibits different pinchoff shapes as the Capillary …
-
Analytic Solutions to the Laplace, Poisson, and Biharmonic Equations with Internal Boundaries: Theory and Application to Microfluidic Dynamics
… to the problem of a thermally driven evaporative liquid bridge in a long V-shaped channel. The problem involves solving a coupled temperature-concentration system of the Laplace equation. Complex analysis based analytic solutions to the concentration equation are also developed along the way. …
-
Effects of polymer concentration and molecular weight on the dynamics of visco-elasto-capillary breakup
… coaxial plates which are used to form and hold a liquid bridge of the test fluid. An axial step strain is applied to the fluid by raising the top plate and the elongated fluid thread then evolves towards breakup under the combined action of viscous, elastic and capillary forces. The test fluids …
-
Investigation of glucose hydrate formation and loss: Parameters, mechanisms, and physical stability
… between particles leads to the formation of liquid bridges, which over time solidify due to dissolution and mass transfer across the liquid bridge without a change in relative humidity or temperature. The critical relative humidity for liquid bridge formation, RHcc, is dependent on particle …
-
Transfer and Filling of Non-Newtonian Liquids in Printing and Coating Processes
Non-Newtonian liquids are omnipresent in a variety of industrial settings and natural systems. While complex rheology is commonly encountered for multi-component inks in liquid-based printing and coating applications, much remains to be explored regarding their influence on the flow dynamics. In …
-
An investigation of droplets and films falling over horizontal tubes
<p>Liquid films falling over horizontal-tube banks are frequently utilized in absorption heat pumps, heat-driven systems that provide an environmentally and economically attractive alternative to conventional CFC-based vapor compression cycles in certain applications. The widespread application of …
-
Stability analysis of a bilayer contained within a cylindrical tube
Airways in the lung are coated with a liquid bilayer consisting of a serous layer adjacent to a more viscous mucus layer which is contiguous with the air core. An instability due to surface tension at the interfaces may lead to the formation of a liquid plug that blocks the passage of air. This is …
-
Electrodeless electro hydrodynamic printing of personalized drug dosages
… to the electrodes to stretch the drop into a liquid bridge that broke up creating a sessile drop on the substrate which could be post-processed into a final dosage form. Versatility was proved in experiments on fluids spanning over three orders of magnitude in viscosity and electric …
-
Capillary forces and wetting dynamics by diffuse-interface modeling
… of this dissertation, the dynamics of capillary bridges and the motion of the three-phase contact line are studied within the framework of the diffuse interface theory. The key to understanding the dynamics of interfacial systems lies in an accurate description of the capillary forces. In this …
-
Estabilidad de puentes líquidos no axilsimétricos
… which equilibrium shapes and the stability of liquid bridges subjected to a wide variety of axisymmetric or non-axisimmetric perturbations can be calculated, has been developed here. The equations governing the steady shape of the liquid bridge and its boundary conditions have been linearized …
-
Interfacial properties of CH₄/C₂H₆ gas hydrate particles with chemical additives
… using low sample volumes in the presence of a liquid hydrocarbon phase at high pressure and low- temperature conditions. This new method addresses an outstanding requirement in the hydrate field to provide a quantitative and reliable AA evaluation technique. Model AAs with known molecular …