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 12 of 12 for “"Fluid-fluid interfaces"”.
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Electro hydrodynamic manipulation of the process of self-assembly of particles at fluid-fluid interfaces
… the process of self-assembly of particles at fluid-fluid interfaces and subjected to uniform electric field normal to the interface. In the numerical study, the particles are moved using a direct simulation scheme (DNS) in which the fundamental equations of motion of fluid and solid particles …
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Development of an Immersed Boundary Method for the Simulation of Moving Bodies at Fluid-fluid Interfaces
Particles interacting with interfaces in multiphase flows appear in many scenarios of industrial interest, including bitumen extraction, mineral recovery via froth flotation, soil remediation, and many others. This thesis presents the development of Immersed Boundary Methods (IBMs) coupled to a …
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Surfactants at fluid interfaces: molecular modeling and deep learning
Surfactants at fluid-fluid interfaces play a critical role in numerous engineering applications, including enhanced oil recovery and fire suppression by foams. This dissertation explores surfactant-laden fluid-fluid interfaces in two applications using molecular dynamics (MD) simulations and …
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Integrating novel rheological tools with microscopy to characterize viscoelastic properties of complex materials
… needing to measure a defined strain field. Fluid-fluid interfaces undergo variety of deformations during the processing steps. Often the contribution of individual deformation type needs to be separated but it’s difficult to achieve with most of the traditional methods. Further, interfacial …
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Mechanistic study of menisci motion within homogeneously and heterogeneously wet porous media
… medium. We calculate analytically the stable fluid configuration in individual pores and throats of a fractionally wet medium. The calculation is made tractable by idealizing the configurations as locally spherical (menisci) or toroidal (pendular rings.) Because the calculation of the …
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Multiphase Microfluidics for Convective Heat Transfer and Manufacturing
Due to the length scales in microfluidic systems interfacial forces dominate over inertia and gravity. In this work, I have designed, fabricated and studied several systems that manipulate interfacial forces for manufacturing and enhance convective heat transfer. These systems have application in …
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Multiphase flow in porous media: the impact of capillarity and wettability from field-scale to pore-scale
… refers to the simultaneous flow of immiscible fluids. It differs significantly from single-phase flow due to the existence of fluid-fluid interfaces, which are subject to capillary forces. Multiphase flow in porous media is important in many natural and industrial processes, including geologic …
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An integrated modal approach to surface and volume scattering in ocean acoustic waveguides
… in terms of normal modes. Scattering from rough fluid-fluid interfaces and rough elastic halfspaces is modeled, and statistics of the acoustic field are calculated. Numerical results show the modal formulation agrees well with Kuperman and Schmidt's model, while reducing computation times by …
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Adsorption of particles on fluid-liquid interfaces
Particles floating on fluid-liquid interfaces are of considerable interest because of their importance in a range of physical applications and biological processes, e.g., self-- assembly of particles at fluid-fluid interfaces resulting in novel nano structured materials, stabilization of emulsions, …
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Exploring the mechanism of interfacial self-assembly of colloidal quantum dot nanoparticles
… nanoparticles at the interface of two immiscible fluids experience certain restrictions on their position and orientation. This property is exploited to create long-range, coherent assemblies of quasi-2D super-structures that are known to possess strong correlations between their packing …
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Molecular-thermodynamic and simulation-assisted modeling of interfacial energetics
… molecular interactions that operate at material interfaces control the efficiency of chemical engineering processes as diverse as adsorption, emulsification, heat exchange, and froth flotation. In particular, the process of colloidal self-assembly harnesses the rich tapestry of interactions that …