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 19 of 19 for “"three-fluid"”.
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Thermodynamic analysis of a three-fluid absorption refrigeration machine
This thesis investigates the three-fluid absorption refrigeration system operating on lowgrade (heat) energy. In particular the temperature-time response of the various components of a domestic size absorption unit were investigated with respect to the pressure of hydrogen in the system under …
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Evaluation of the microencapsulation performance by spray drying with a three-fluid nozzle
… produced by spray drying. Recently, a three-fluid nozzle (3FN) is designed for spray dryers. It separates wall material and core material into two feed channels, which eliminates the need for the formation of emulsion or mixture before spray drying and provides a possibility to …
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Audio for Flow Monitoring in Wastewater
… Audio is underutilised as a sensor input despite fluid flow naturally generating sound through different physical processes. This thesis investigates low-cost non-invasive microphones for flow monitoring, laying the groundwork with a qualitative interview study of barriers and opportunities in the …
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Numerical methods for viscous fluid flows in sectors, cones, and domains with corners
This thesis deals with three fluid dynamics problems: the problems of the viscous fluid flows in infinite sectors, cones, and finite 2D domains with corners. The focus of the research was on the flow regimes near the corner, far from the corner (in case of sectors and cones), and in the transition …
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Quasi-Steady Operation of Reversed Field Pinches
Made available in DSpace on 2017-07-06T18:42:42Z (GMT). No. of bitstreams: 3 Nebel_Richard_A_PhD.pdf: 64227133 bytes, checksum: 499c7456d69c576b8ba001c3af623be0 (MD5) Nebel_Richard_A_PhD_ABS.pdf: 870878 bytes, checksum: d19c82f2d4d35f6687699ac2a02efc24 (MD5) license.txt: 4813 bytes, checksum: …
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Microfabrication methods for the study of chemotaxis
… Numerical models were generated to investigate fluid flow in microchannels for given geometries. Through computational modeling and experimentally-driven iteration of the design, features of the chamber were determined and geometry was established. Prototypes of the system were fabricated using …
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Control of crystalline particle properties by spray drying
… co-spray drying in the Büchi system using a three-fluid nozzle was used to produce multicomponent composite particles comprising of two crystallite phases. The effect of process configuration and material properties on the resultant particles was assessed using particle sizing, SEM, XRPD and …
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Multiphase immiscible flow through porous media
… for multiphase flow through soil involving three immiscible fluids: namely air, water, and an organic fluid. A variational method is employed for the finite element formulation corresponding to the coupled differential equations governing the flow of the three fluid phase porous medium …
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Using nested structures to select models for developmental trajectories of cognitive abilities in adulthood
… as appropriate for all crystallized abilities. Fluid abilities, however, showed a more constant rate of change than crystallized abilities, consistent with the literature. More specifically, the three fluid abilities were adequately modeled by a linear SI, a quadratic SI, and a single-factor …
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Modeling of fluids and waves with analytics and numerics
… particle fabrication. Motivated by complex multi-fluid geometries currently being explored in these applications, we theoretically and computationally studied capillary instabilities in concentric cylindrical flows of N fluids with arbitrary viscosities, thicknesses, densities, and surface …
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Modified Release of Agglomerated Nano-Particles for Pulmonary Drug Delivery
… dry powders using aqueous spray drying with a fluid nozzle. The spray dried particles had an aerodynamic and geometric particle size distributions was in the 1-5 µm range. Drug release was evaluated using USP- II apparatus and showed all formulations had accelerated drug release with no …
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Development of a Multifluid Magnetohydrodynamic Model for Anisotropic, Partially Ionized Plasmas
A multifluid magnetohydrodynamic (MHD) model based on an extended fluid dynamics description for each plasma species is proposed for the prediction of the flow and behaviour of fully and partially ionized non-equilibrium anisotropic plasmas. Two-(electrons and ions) and three-fluid (ions, electrons …
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Fermi Mixtures: Effects of Engineered Confinements
… 0 and the main properties of the normal-to-superfluid transition. Then we study the trapped gas under adiabatic rotation, i.e., avoiding the formation of vortices. We show that for polarized systems the rotation enhances the Chandrasekhar-Clogston limit due to pair breaking at the border between …
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Encapsulation of tributyrin using various techniques to improve its intestinal delivery and sensory quality
… TB including spray-drying with two and three fluid nozzles (2FN and 3FN, respectively), inclusion complexation and cross-linking of biopolymers. Various wall materials such as whey protein isolate (WPI), gamma-cyclodextrin (CD) and sodium alginate (AL) were selected based on their …
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Two-dimensional, Hydrodynamic Modeling of Electrothermal Plasma Discharges
… The newly developed model and code is called the Three-fluid, 2D Electrothermal Plasma Flow Simulator (THOR). THOR simulates the electron, ion, and neutral species as separate fluids coupled through interaction terms. The two-dimensional modeling capabilities made available in this new code …
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Facebook as Transnational Space: Language and Identity among 1.5 and Second Generation Mexicans in Chicago
… bilingualism. Simultaneously, members also index three fluid and complex identities: transnational U.S. Mexican identity, ranchero identity, and indigenous Mexican identity. In constructing and negotiating these three multivalent identities, members are shifting their social order from a …
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Measurement and Modelling of Soft Solid Layers in Cleaning Applications
… the development of millimanipulation and two new fluid dynamic gauging (FDG) devices, namely sideways FDG (SiDG) and integrated FDG (iFDG), and demonstrates their application for in situ measurement. Computational fluid dynamic (CFD) simulations of the flow patterns using the volume of fluid …
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A study on the fluid film of an atomization-based cutting fluid (ACF) spray system during titanium machining
… tool wear. The atomization–based cutting fluid (ACF) spray system has recently been demonstrated to improve tool life during titanium machining. The penetration into the tool–chip interface by means of the thin fluid film created by the ACF spray system appears to be the mechanism by which …
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Large-Eddy Simulations of Hydrocyclones
… conventional hydrocyclone using the Eulerian two-fluid (Eulerian-Eulerian) and Volume-of- Fluid (VOF) models. Subgrid stresses are modeled using a dynamic eddy–viscosity model, and results are compared to those using the Smagorinsky model. The effects of grid resolutions on the mean flow and …