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 14 of 14 for “"interfacial forces"”.
-
Analysis of interfacial forces on the physics of two-phase flow and hyperbolicity of the two-fluid model
… and mathematical solutions. The physical forces that we will focus on are two interfacial forces: the interfacial pressure and the virtual mass. We will quantify the minimum correction that is necessary to ensure hyperbolicity of the two-fluid model. We will then compare the two forces and …
-
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 …
-
Droplet IO : programmable droplets for human-material interaction
… can undergo physical transformation through interfacial forces and surface tension. I introduce a system called DropletIO to regulate interfacial forces through a programmable electric field. The system can actuate and sense macro-scale (micro-liter to milli-liter) droplets on arbitrary …
-
Modeling of melt pool thermal behavior in laser material
… melt pool dynamics is primarily driven by the interfacial forces, which in turn rely considerably on the melt pool geometry, a free surface tracking method associated with the numerical implementation scheme is proposed. The dissertation investigates the melt pool evolution process and analyzes …
-
Engineering physico-chemical interactions across drug delivery, agriculture and carbon capture
… as reaction rates are limited by the low interfacial areas between the flue gas and absorbents in current systems. This work explores how introducing new interfaces or interfacial forces can help solve these three challenges. First, we demonstrate viscosity agnostic injectability of drug …
-
Inclusion behaviour in steel flows through convergent nozzles.
… the nozzle. Thisa adhere strongly at the wall by interfacial forces. The theory examined in this thesis is that during the curved flow path through the nozzle, inclusions move towards the nozzle wall by the action of centripetal force. A mathematical model has been developed which takes account of …
-
Treatment of Uncertainties in Vehicle and Terramechanics Systems Using a Polynomial Chaos Approach
… the geometry of the contact patch and the interfacial forces and torques on the vehicle-soil interfaces are developed. All stochastic models and algorithms are simulated for various scenarios and maneuvers. Numerical results are analyzed from the computational effort point of view, or from …
-
Semantic model and updated screening criteria for polymer flooding
… that conventional methods leave behind, where interfacial forces, heavy oil viscosity, and reservoir heterogeneity make it difficult to produce. Many EOR methods are available but usually cannot be used at the same time for a candidate reservoir. Therefore, it is important to select the most …
-
Hydrodynamics Of Drops And Particles Driven By Marangoni And Diffusiophoretic Forces
… hydrodynamics of particles and drops driven by forces generated by an asymmetrical physical and chemical surrounding environment. In the first part, a novel colloidal motor design driven by surface tension forces is proposed, utilizing an active Janus particle encapsulated in an immiscible …
-
Development of hydrate risk quantification in oil and gas production
… parameters, which account for inertial, viscous, interfacial forces acting on the flow-system, is developed for oil dominated and condensate systems. The hydrate plugging risk for water dominated systems is successfully modeled using The Colorado School of Mines Hydrate Flow Assurance Tool …
-
An improved structural mechanics model for the FRAPCON nuclear fuel performance code
… and cladding along with their interaction via interfacial forces. The fuel pellet and cladding are modeled as concentric annular cylinders using similar governing equations with slight differences to allow for cracking of the semi-brittle fuel matrix and plastic behavior in a ductile cladding. …
-
Thin liquid films with nanoparticles and rod-like ions as models for nanofluidics
… small spaces, or to subject them to controlled forces. This makes the foam films a unique “device” available to obtain information about fluidic systems in nanometer dimensions. The main goal of this thesis was to study nanofluidic processes using TLFs as models, or tools, and to subtract …
-
Experimental investigation of interfacial tension in two-phase system involving methane and water
… of reservoir fluids such as viscous and interfacial forces is critical in many oil and gas, petrochemical, and other related industries. In oil and gas industry, the production, transportation and processing of hydrocarbon fluids involve dealing with the multiphase system. Viscosity and …
-
Eco-Friendly Chemical Herders For Remediation Of Maritime Oil Spill
… edge. This reduction causes an imbalance of interfacial forces and forces the oil spill to retract to a thicker slick with smaller areas. While chemical herding has been part of the arsenal of methodologies intended to be used to remediate oil spills, the method suffers from two key drawbacks …