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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 73 for “"Wick"”.
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Wick irrigation systems for subsistence farming
… cost is essential. The possibility of using a wicking irrigation system that relies on the suction plants create for water to mitigate the pumping pressure is investigated. A theoretical model for such a system is developed for an acre sized wicking irrigation system, and the power and water …
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Pion production in pion-nucleon collisions in the Chew-Low-Wick formalism
Thesis (Ph.D.) Massachusetts Institute of Technology. Dept. of Physics, 1956.
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Above and beyond the standard model : on phenomenology of Lee-Wick theory and massive vector color-octet
… into two main parts: Part I focuses on the Lee-Wick Standard Model (LW SM), which, by providing a solution to the Hierarchy problem, forms a natural extension of the electroweak sector, while Part II studies the coloron theory, arising from extending the strong sector gauge group.Providing a …
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Experimental Investigation and Validation of Boiling and Condensation Thermal Resistances in Cylindrical Thermosyphons and Screen-Wick Heat Pipes.
… and 10 copper–water HP with copper screen-mesh wicks to quantify pool boiling, falling-film boiling, and condensation resistances. Experiments were performed over fill ratios of 0.35–0.75, aspect ratios of 5.3–12.5, inclination angles from 20° to 90°, and evaporator heat-input rates of 6.8–34.0 …
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Settlement Analyses of Grade Supported Tanks Constructed with the Use of Prefabricated Wick Drains and an Earth Preload
In the design of tank foundations several design techniques are considered. This study focuses on grade supported tanks constructed under an extensive preload and instrumentation program. Settlement estimation methods were performed and compared to field instrumentation data taken at the project …
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Numerical multiphysics modelling of Wick-Boiling in a crud with porosity variations to determine local Nickel Ferrite depositions within crud due to deep bed filtration
… through porous deposits with chimneys where wick boiling contributes to bulk of heat transfer, on thermal performance, solute concentration levels and particle number density distribution are examined through a two-dimensional model. The multi-physics model is described by a coupled system of …
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Small scale desalination in South Africa with particular reference to solar distillation
… was done on both a basin still and on inclined wick stills, single and multiple effect, in order to ascertain reliability and cost-effectiveness. The single effect inclined wick still was found to be the most promising and its design was investigated for the effect of parameters such as basin …
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Experimental design for study of nucleate boiling in porous structures
… to initiate nucleate boiling inside porous wicks is not well understood in practice. This thesis reports the design of an experimental setup for investigating the onset of vapor nucleation in sintered porous structures. Pressure sensing was evaluated as an effective means of detecting the …
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Functional formalism for algebraic classical and quantum field theories
… in the simpler setting of scalar field theory. Wick powers and time ordered products for quantum field theories in curved spacetimes are defined by giving a set of axioms which, when implemented, defines uniquely, up to some classifiable ambiguities, the aforementioned quantities. Those …
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Effect of fabrication parameters on thermophysical properties of sintered wicks
Porous wicks for use in a loop heat pipe were sintered from copper and Monel powder. These wicks were characterized in terms of their shrinkage, porosity, thermal conductivity, liquid permeability and maximum capillary pressure. The effect of fabrication parameters (particle size and sintering …
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Experimental Investigation of Liquid and Gas Fueled Flames Towards the Development of a Burning Rate Emulator (BRE) for Microgravity Applications
… orientations with respect to gravity. Flat wicks were saturated with methanol or ethanol. Steady flames were obtained, and ranged from boundary layer flames to plume-type burning. Maximum burning rate per unit area was recorded at an upward inclination of 30º. Mass flux decreased with …
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Novel Charging Station and Computational Modeling for High Thermal Conductivity Heat Pipe Thermal Ground Planes
… adverse gravitational fields due to nano-porous wicks. A key factor in the design of the TGP is evacuation prior to filling and introduction of the proper amount of working fluid into the device. The major challenge of this work is to fill heat pipes with a total liquid volume of less than 1 ml, …
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Manufacturing and characterization of welded, sintered condensers for a loop heat pipe
… for a welded condenser utilizing a sintered wick. Electronic devices have progressed to the point where new designs are limited by the thermal management system used to ensure safe operating temperatures. Coupling the effects of high surface area of multiple condensers, the low thermal …
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Tubo de calor de água, um estudo teórico-experimental
… of 25,4 mm and a wall thickness of 0,79 mm. The wick structure is a composite phosphor bronze wrapped-screen wick with meshes 50 and 250 fitted against the inner wall of the tube to leave a vapor space diameter of 17 mm. The prototype was instrumented and monitored. The measured wall temperature …
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Transpiration Electrokinetic Power Generation and Zinc Ion Battery for Autonomous Leak Detection
… electrokinetic power generator (TEPG) and a wick activated zinc air battery. Carbon nanotube paper was implemented as a TEPG using an active zinc anode to harness energy from moisture wicking and electrochemical processes, achieving a maximum theoretical power output of 1.4 mW. A single …
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