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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 329 for “"parametric studies"”.
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Parametric Studies of Electro-Hydrodynamic Spraying
Made available in DSpace on 2014-12-08T22:23:49Z (GMT). No. of bitstreams: 1 6511854.pdf: 4616540 bytes, checksum: 404f3375677d2bdbdfefe577fb2f8c9b (MD5) Previous issue date: 1965
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Parametric studies on dropwise condensation heat transfer
… and are focus of this study. There are few studies on surface morphology effect on wetting behavior of a solid in relation to condensation heat transfer. We conducted these studies to understand the phenomenon. Condensation heat transfer is affected by condensate droplets properties on the …
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Parametric Studies Based Mechanical and Thermal Modelling of Spot Welded Joints
This work has focused on formulating a experimental/numerical framework for the investigation of spot weld properties and performance. An Inverse temperature measurement approach has been established to predict the thermal history of a spot welded joints using remote thermocouples. This method …
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Parametric studies of the criticality of radioactive spent fuel canisters in a tuff repository
… radioactive waste. In this study, a series of parametric analyses were completed to show the relative change in the value of k{dollar}\sb{\rm eff}{dollar} due to changes in canister composition, intrusion of water, and increased enrichment of the fuel. It was found that k{dollar}\sb{\rm …
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A 2nd generation electrohydrodynamic jet (e-jet) printing system, parametric studies of e-jet nozzles and integrated electrode e-jet deposition
… the main effects of each parameter. These studies were then sent to Singapore to validate a computational model of the e-jet process. Sub-micron studies using the same parameters were also carried out in order to create a better understanding of how they work so that the resolution of the …
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Modelling and design of compact wideband and ultra-wideband antennas for wireless communications. Simulation and measurement of planer inverted F antennas (PIFAs) for contemporary mobile terminal applications, and investigations of frequency range and radiation performance of UWB antennas with design optimisation using parametric studies.
The rapidly growing demand for UWB as high data rates wireless communications technology, since the Federal Communications Commission (FCC) allocated the bandwidth of UWB from 3.1GHz to 10.6 GHz. Antenna also plays an essential role in UWB system. However, there are some difficulties in designing …
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Model and design of small compact dielectric resonator and printed antennas for wireless communications applications. Model and simulation of dialectric resonator (DR) and printed antennas for wireless applications; investigations of dual band and wideband responses including antenna radiation performance and antenna design optimization using parametric studies
Dielectric resonator antenna (DRA) technologies are applicable to a wide variety of mobile wireless communication systems. The principal energy loss mechanism for this type of antenna is the dielectric loss, and then using modern ceramic materials, this may be very low. These antennas are typically …
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Control of salinity intrusion caused by sea level rise
… and salinity. Through a selected estuary. parametric studies on scenarios of projected sea level rise, stream flow, channel roughness, change in cross-section profile, etc. are performed in order to have an in-depth understanding of estuarine processes for cases such as present condition …
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Parametric modeling and analysis of structural bonded joints
… are formulated for this new model. Various parametric studies are performed on the closed form model to observe their effect on the behavior of the shear stress distribution in the adhesive. Overlap length, stiffness of the extensional link, thickness of the adhesive and stiffness of the …
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Numerical and analytical modeling of heat transfer between fluid and fractured rocks
… transfer model, GEOFRAC-THERMAL, is developed. Parametric studies with the three models are conducted to analyze the sensitivity of the parameters. A case study with the three models on the Fenton Hill project is conducted to demonstrate the capability of the three models in modeling the heat …
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UWB antenna using indium tin oxide (ITO)
… Tin Oxide (ITO) and AgHT were investigated. Parametric studies were performed to quantify the effect of the ITO and AgHT characteristics as well as the PET (plastic polymer) coating. All those parametric studies are conducted and simulated using CST Microwave Studio. The reflection …
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Investigation of a Highly Loaded, High Pressure Ratio Axial Turbine Stage for Industrial Applications
… set of investigations, which included parametric studies, throughflow solutions, and 2D airfoil shapes. The design procedure was defined and used for the conceptual design calculations; several parametric studies were conducted to assess the impact of various critical design parameters …
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Computer analysis of Cross Canyon culvert
… crown vertical displacement was minimized. The parametric studies were done after the modified soil model was obtained. In this research, the parametric studies were (1) Effects of different inclusion material on the culvert, (2) Effects of polystyrene plank wrapped around the culvert, (3) …
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Modelling the effects of soil variability and vegetation on the stability of natural slopes.
… of failure. In this research, extensive parametric studies are conducted, using the RFEM, to investigate the influence of COV and SOF on the probability of failure of a cohesive slope (i.e. undrained clay slope) with different geometries. Probabilistic stability charts are then developed …
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Theoretical Analysis of Transpiration Cooling of a Liquid Rocket Thrust Chamber Wall
… flow model was also used to perform parametric studies involving varying the thickness and porosity of the porous liner section of the wall. The results of these parametric studies show that varying the thickness and/or porosity of the porous liner can be utilized as a means for …
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Numerical Modelling and Analysis on Structural Behaviour of Composite Slim-Floor Beams
… beams, FE models developed and validated, and parametric studies were carried out. According to FE results, the shear (in a weak cross-section) and bending resistance prediction methods (stress block method) with related classifications and limitations were proposed. The validity and accuracy …
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Geometrically Nonlinear Analysis of Axially Symmetric, Composite Pressure Domes Using the Method of Multiple Shooting
… finite element analysis codes STAGS and ABAQUS. Parametric studies are performed for ellipsoidal domes constructed of symmetric, 8-ply laminates. The parametric studies examine the effects of dome geometry for a quasi-isotropic laminate first, then examine whether material properties may be …
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Recommendations for Longitudinal Post-Tensioning in Full-Depth Precast Concrete Bridge Deck Panels
… were determined by the results of parametric studies which investigated the behavior of bridges with precast concrete decks supported by both steel and prestressed concrete girders in single spans as well as two and three continuous spans. The three primary variables in each …
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Finite element analyses of cellular cofferdams
… on sandy soils, and (3) use the results of parametric studies of cofferdams founded on sandy soils to develop a simplified procedure to predict cofferdam movements and determine potential for internal failure. The first of the objectives involves adding better bending elements to the program …
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