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 15 of 15 for “"Gravity effects"”.
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Cavity flow past an obstacle including gravity effects
… roughness element in an open channel with gravity effect included. The method developed is based on an inviscid, irrotational and incompressible flowfield, using a finite-difference representation with stream functions as dependent variables. A computer program is developed to adjust free …
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Modeling increased height, diameter, and specific gravity effects on yield estimates in planted loblolly pine stands
Increased growth of Pinus taeda L. plantations is expected from genetic improvement and intensified cultural practice. It is necessary for forest managers to have a means for estimating the yield of forest stands after increased growth occurs. Several models were tested to determine which could …
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Dynamic Contact Angles And Wetting Front Instability In Soils
… of wetting fronts and the formation of gravity fingers/columns in porous media. To study those dynamic contact angles when gravity effects are present, rectangular capillary tubes are used to facilitate the observation of the complete interface without geometric distortion. Results show …
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Physics from Time Variability of the VHE Blazar PKS 2155-304
… of Lorentz invariance induced by quantum-gravity effects from AGN measurements.
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Micro-Scale Simulation of Evaporation, Condensation and Transport in Porous Media
… to temporary trapping of vapor. Grid size effects are also addressed. The application of this modeling effort is the condensation of steam in thermal recovery methods. The effect of temperature on bitumen viscosity reduction during steam flooding operation as well as steam condensation, …
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Nonsingular and deformed black holes Fundamental aspects and phenomenology
Einstein’s theory of gravity, general relativity, stands as one of the most successful and enduring pillars of modern physics. Its predictions have consistently aligned with a vast array of observed phenomena within our Universe. However, the enigmatic nature of gravity persists, particularly when …
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Experimental, theoretical and computational modeling of flow boiling, flow condensation and evaporating falling films
… understanding of phase change methods in reduced gravity, including microgravity. In this study, phase change methods like flow boiling, flow condensation and evaporative falling-films are investigated experimentally, theoretically and computationally.</p> <p>The experimental part of the study …
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Quantum Corrected and Nonsingular Black Holes: Theoretical and Phenomenological Aspects
… questions remain about the fundamental nature of gravity. These unresolved issues suggest the need for a quantum extension of Einstein's theory, which has remained elusive until now. \\ This thesis explores various instances of quantum-gravity effects in different setups, focusing on their impact …
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Computer simulation of ordering and dynamics in liquid crystals in the bulk and close to the surface
… of spherical shape suspended in 5CB, and gravity effects are replaced by a constant force applied to the nanoparticle in a selected direction. Once the nanoparticle reaches a constant velocity, the viscosity of the medium can be evaluated using Stokes' law. With this method we successfully …
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Computations of fully nonlinear three-dimensional wave-body interactions
Nonlinear effects in hydrodynamics of wave-body interaction problems become critically important when large-amplitude body motions and/or extreme surface waves are involved. Accurate prediction and understanding of these fully nonlinear effects are still challenges in the design of surface ships …
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Investigation of the influence of gravitational body force effects on critical heat flux for flow boiling with subcooled and two-phase inlet
… understanding of the influence of reduced gravity on flow boiling and condensation, and the development of predictive tools for both. The primary purpose of the present study is to investigate the impact gravitational body force effects have on flow boiling heat transfer performance and …
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From some obscurity to clarity in Boom clay behavior: Analysis of its coupled hydro-mechanical response in the presence of strain localization
… anisotropic permeabilities, and gravity effects. As a result, an eye-shape extension of EDZ accompanied by an anisotropic convergence of the rock is predicted. A coupled analysis addresses the pore water pressure distribution during the excavation period and in long-term while no …
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Solvable Models on Noncommutative Spaces with Minimal Length Uncertainty Relations
… length scales close to the Planck length, strong gravity effects limit the spatial as well as temporal resolution smaller than fundamental length scale, leading to space-space as well as spacetime uncertainties. Space-time cannot be probed with a resolution beyond this scale i.e. space-time …
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Effects of flow orientation on condensation in tubes
… upflow and horizontal flow as well as the effects of channel orientation on flow condensation. Two separate condensation test modules are employed, one for high-speed video imaging of the film interface and the second for heat transfer measurements. Condensation in both test modules is …