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 “"No-slip Boundary Condition"”.
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Engineering physico-chemical interactions across drug delivery, agriculture and carbon capture
… phases often limits the efficiency of several phenomena. In drug delivery, viscous formulations are difficult to inject through medical needles as the no-slip boundary condition between the needle and the viscous drug product greatly resists fluid flow. In agriculture, the inherent water …
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Prediction of velocity distribution from the statistics of pore structure in 3D porous media via high-fidelity pore-scale simulation
… of pore structure in 3D porous media have not been established yet. High velocities are controlled by the formation of channels, while low velocities are dominated by stagnation zones. Recent studies have proposed phenomenological models for the distribution of high velocities including …
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Simulating the Motion of Droplets on High-Slip Patterned Surfaces
… plants are superhydrophobic due to micro- and nano-scale structures on their surfaces, a property that may have evolved to clean the leaves by encouraging water droplets to bead up and roll off. Patterned superhydrophobic surfaces can also exhibit reduced friction, and liquids flowing over such …
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On the rolling motion of viscous fluid on a rigid surface
… to be an incompressible Newtonian fluid and a no-slip boundary condition is enforced at the solid boundary, the non-integrable stress singularity arises at the contact line, which is physically unrealistic. The contact angle of 180 is considered as a special case in which the singularity is …
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Swimming at low Reynolds number slip boundaries and interacting filaments
… hydrodynamically with a fluid through slip boundary conditions or with other filaments and is composed of two separate parts. The first part of the thesis focuses on a single filament characterised by a slip boundary condition, which is a property displayed by many non-Newtonian fluids. …
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Enhanced Laminar Convective Heat Transfer using Microstructured Superhydrophobic Surfaces
… to the surface. For many cases, the classical no slip boundary condition holds true. However, there are a subset of situations where this assumption is not valid, and slip between the surface and fluid must be considered. One such example is a micropatterned, superhydrophobic surface, which has …
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Molecular dynamics-based approaches for mesoscale lubrication
… lubrication theory is unable to describe nanoscale flows due to the failure of two of its constitutive components: a) the Newtonian stress-strain rate relationship and b) the no-slip boundary condition. In this thesis, we present a methodology for deriving a modified Reynolds equation …
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Molecular Dynamics Simulations of A Suspended Particle In A Fluid Near A Wall
… Recent developments in the field of micro- and nanofluids have led to a renewed interest in molecular hydrodynamics phenomena. The micro hydrodynamic interactions between particles and solid surfaces have been shown to play important roles in the ordering of particles in vibrated fluids, …
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Lubrication Forces in Polydimethylsiloxane (PDMS) Melts
The flow properties of polydimethylsiloxane (PDMS) melts at room temperature were studied by measurement of lubrication forces using an Atomic Force Microscopy (AFM) colloidal force probe. A glass probe was driven toward a glass plate at piezo drive rates in the range of 12 – 120 μm/s, which …
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Topological Chaos and Mixing in Lid-Driven Cavities and Rectangular Channels
… two infinite plates with spatially periodic boundary conditions, an exact solution in a rectangle with finite width, which represents the flow in this infinitely-wide cavity, can be obtained by using the principle of superposition. A fully developed, three-dimensional flow in a rectangular …
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An Experimental Spatio-Temporal Analysis of Separated Flows Over Bluff Bodies Using Quantitative Flow Visualization
… (DPIV) system was developed. This system allows non-intrusive two-dimensional and time varying velocity measurements. Software and hardware modifications necessary to enhance the capabilities of the system were preformed, resulting in increased frequency resolution. However, due to hardware …
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Electromechanics and electrorheology of fluid flow with internal micro-particle electrorotation
… polarization in order to characterize the non-equilibrium motion effects of the continuum spin velocity, co, continuum linear velocity, v, and micro-particle rotation speed, n, on the polarization responses as well as the electrical body torque inputs in the negative electrorheological flow …