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 20 of 1249 for “"Two Phase"”.
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Two phase problems and two phase flow
In section 1 of this thesis a two-dimensional mathematical model is used to investigate the circulation in a gas-bubble agitation system of a cylindrical vessel for the case of an orifice located at the centre of the base. The two-phase (liquid/gas) region is assumed to be confined to a cone-shaped …
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Two-Phase Boost Converter
… in this report is a proof of concept that a Two-Phase Boost Converter is a possible improvement topology to offer higher efficiency without compromising any advantages readily offered by a basic boost. The prototype is designed to be able to handle up to 200 watts of output power with an …
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Developing Adiabatic Two-Phase Flow
… characteristics of the adiabatic development of two-phase flow this study was performed using H2FC-CF 3 - 1,1,1,2-Tetrafluoroethane (R134A) as a working fluid in three different transparent tubes. The flow was visualized using a high speed camera. To better (faster and more objectively) analyze …
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Droplet-based Two-phase Thermal Management
… thermal management methods. Droplet-based two-phase thermal management technologies are considered promising solutions to conquer the cooling challenges in the electronic industries. The heat transfer behavior of droplets is based on several important fundamental processes, such as droplet …
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Autoignition in turbulent two-phase flows
… review of the CMC method for both single and two-phase flows. The problem of modelling droplet related effects in the CMC transport equations is discussed in detail, and physically-sound models for the unclosed terms that appear in these equations and that are affected by the droplet presence …
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Two phase flow in capillary tubes
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1963.
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Two-phase flows accompanying fires in enclosures
The dispersed phase that accompanies enclosure fires, for example, soot, ash, sprinkler droplets and extinguishing powder, could exert a significant influence on the dynamics of the background fluid. In this thesis, the results of a numerical study into the effects of this dispersed phase on the …
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Two-phase flow dynamical simulations and modelling
… progress in understanding and predicting two-phase flow phenomena has been advanced over the past 10 years or so using a combination of model development, computational techniques and well-designed experiments. However, there remain many modelling uncertainties mainly associated with …
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Characterization of Two -Phase Flow in Microchannels
… analysis is another important goal for two-phase flow behavior understanding and experimental analysis. Experiments were performed with a 6-port and a 14-port microchannel with hydraulic diameters of 1.54 mm and 1.02 mm, respectively. Mass fluxes from 50 to 300 kg/s.m2 (range of most …
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Two phase flow splitting in piping branches
… by helical grooves in the tube supplying the two-phase flow to the tripod. The flow regime of concern is primarily annular. Experiments were run and data was collected and analyzed. The two piece tripods were generally found to have manufacturing defects which made their performance …
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Liquid droplet trajectories in two-phase flow.
Massachusetts Institute of Technology. Dept. of Nuclear Engineering. Thesis. 1969. Ph.D.
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The momentum flux in two-phase flow.
Massachusetts Institute of Technology. Dept. of Mechanical Engineering. Thesis. 1966. Sc.D.
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Water hammer transients in two-phase flow
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1989.
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Two phase magnetoelectric epitaxial composite thin films
… Magnetoelectricity can be found both in single phase and composite materials. Compared with single phase multiferroic materials, composite multiferroics have higher ME effects. Through a strictive interaction between the piezoelectricity of the ferroelectric phase and the magnetostriction of the …
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Developing two-phase flow after an expansion valve and the effect of flow patterns on two-phase flow distribution
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-08-01
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CHEMILUMINESCENCE ANALYSIS BASED ON TWO PHASE REACTANT SYSTEMS
… detection is proposed and demonstrated. Two Phase Chemiluminescence utilizes an immobilized reagent bulk phase and a sample phase which contains the analyte. The analyte is permitted to diffuse into the reagent phase under controlled conditions. A chemiluminescent reaction occurs in the …
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Two-phase closed thermosyphon with two-fluid mixtures.
… to investigate the performance of stationary two-phase closed thermosyphons with two-fluid mixtures. Three mixtures were used as the working fluids: (1) water-ethanol, (2) water-ethyleneglycol and (3) water-glycerol. The results are presented to show the effects of ratio of two fluid …
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Bubble Induced Heat Transfer in Two-Phase Systems
The two-phase theory of fluidization has been extended to cover heat transfer at surfaces by introducing the concept of a property boundary layer in the vicinity of the surface. The property boundary layer is a consequence of changed voidage and hence of changed thermophysical properties of the …
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