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 21 for “"Intermittent Flow"”.
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Non-universal behavior of intermittent flow in microplasticity
… plasticity of metals demonstrates stochastically intermittent and scale-free “dislocation avalanche” behavior during deformation. The scale-free nature of these deformation events means that they have no well-defined mean, and therefore are somehow fundamentally incompatible with a model based on …
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Evaluation of alkali flooding combined with intermittent flow in carbonate reservoir
… to reach the maximum reversal condition. An intermittent flow with the optimum pausing period is then combined with alkali flooding (combination technique) to increase the wettability reversal mechanism and as a consequence, oil recovery is improved. The aims of this study are to evaluate the …
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Time-fractional analysis of flow patterns during refrigerant condensation
… of a modular refrigerant test system capable of flow condensation and evaporation were performed. The purpose of this study was the investigation of flow patterns during refrigerant condensation in intermittent flow in order to improve the prediction models. An objective flow pattern descriptor …
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Modeling and design of semi-solid flow batteries
… model of the recently introduced semi-solid flow battery system is developed and applied to address issues with important design and operation implications. Because of the high viscosity of semi-solid flow battery suspensions, alternative modes of operation not typically used in conventional …
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Semi-solid redox flow battery
… and the design and functioning of a redox flow cell. The use of Li-ion battery materials offers significant increases in energy and power density (200 Wh/kg compared to 25-35 Wh/kg for current commercial vanadium redox batteries). The implementation of a redox flow system allows for energy …
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Developing Adiabatic Two-Phase Flow
… 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 the flow, a …
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New Insights into Lead and Copper Corrosion: Impacts of Galvanic Corrosion, Flow Pattern, Potential Reversal, and Natural Organic Matter
… periods. In addition to water chemistry, flow pattern also has an impact on galvanic corrosion of lead. Conventional wisdom regarding lead release indicates that continuous flow results in the greatest mass of lead release, but reports of anomalously high lead concentrations after long …
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RELATING METABOLIC PHENOTYPES TO MOVEMENT BEHAVIOR IN BROOK TROUT
… a tributary to the Rock River, Alger County, MI. Intermittent flow respirometry was used in the field using ambient stream water to determine metabolic phenotypes of wild trout. Individuals were then tagged with passive integrated transponders (PIT) and tracked with stationary readers and a …
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The Use of Dynamic Fluid Flow Strategies for Bone Tissue Engineering Applications
… envisioned to guide bone healing in vivo. Fluid flow, which exerts a hydrodynamic shear stress on adherent cells, has been identified as one of the strongest stimuli on bone cell behavior. It has been shown to enhance the deposition of osteoblastic matrix proteins in vitro, and is particularly …
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Mesoscale Forces and Grain Motion in Granular Media Exhibiting Stick-Slip Dynamics: Effects of Friction and Grain Shape
… interactions among grains, and in many cases the flow and stability of granular packings, change when grain shape is modified. In this dissertation, we explore the influence of friction and grain shape on grain-scale dynamics, properties of mesoscale force chains, and macroscopic stick-slip …
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Downhole Gas Separator Performance in Sucker Rod Pumping System
… of 10 different gas separators for continuous flow (such as developed by the progressing cavity pumps). This data was used to generate correlations between the gas flowing through the separator, thesuperficial gas velocity in the annulus and the superficial liquid velocity inside theseparator. …
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Electrochemical Flow System for Li-Ion Battery Recycling and Energy Storage
… an enormous market globally. The electrochemical flow system has many applications in Li-ion battery recycling and energy storage system design. First, research work on a scalable electrochemical flow system is presented to effectively restore the lithium concentration in end-of-life Li-ion …
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Impact of Piping Materials on Water Quality in Tegucigalpa, Honduras
… performed. The sampled neighborhoods received an intermittent service. Water was suspended for 8 hours every day due to water quantity problems in the city. Water and pipe samples were obtained for PVC and galvanized iron pipes because these constitute the majority of the infrastructure used for …
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The sedimentology and dynamics of mega-dunes, Jamuna river, Bangladesh
… thesis quantifies the occurrence, morphology and flow dynamics of dune bcdforms in the main rivers of Bangladesh: the Jamuna, Meghna and Ganges. Field work was conducted as part of the River Survey Project (Bangladesh Flood Action Plan 24) between November 1993 and March 1996, hence encompassing …
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Integrated multiphase flow modeling in wellbore for downhole pressure predictions
… of various disciplines that pertain to the flow of fluids within a conduit, knowing the bottomhole flowing pressure (P_wf) and pressure profile in the wellbore are of undeniable significance. One would ask why not deploy downhole pressure gauges to obtain P_wf readings. Unfortunately, it is …
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Contributions to the Understanding of Ship Airwakes Using Advanced Flow Diagnostic Techniques
… complex, three dimensional, unsteady aerodynamic flows produced by the superstructure of a ship, which is referred to as an airwake. This problem is relevant and important because the turbulent airwake significantly and adversely affects the ability for rotorcraft to operate safely from the decks …
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In-line powder flow behaviour measured using electrostatic technology
Within solid-dose manufacturing processes, powder flow and powder triboelectrification are critical to the quality of the final product. Off-line testers do not simulate the shear and packing conditions that a powder would experience in-process and may be unreliable in predicting in-line flow and …
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Strengths and limitations of bioretention sorbent amendments to simultaneously remove metals, PAHs, and nutrients from urban stormwater runoff
… of three amendments (CCF, WTCR, and BFS) under intermittent runoff condition considering different runoff intensities and antecedent dry periods (ADP). The long-term effects of amendments on plant health and infiltration rate of all media were also investigated. Finally, HYDRUS-1D and a cost …
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Comparative hypoxia responses and oxygen sensing in galaxiid fishes
… oxygen demands and oxygen consumption profiles, intermittent-flow respirometry was utilised to investigate routine metabolic rates at normoxia, mild and severe hypoxia. Inanga demonstrated oxygen consumption rates similar to banded kokopu, while black mudfish was lower. Inanga and banded kokopu …
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Physiological and behavioral drivers of angling vulnerability in freshwater sportfish
… fish were assessed for metabolic rate using intermittent-flow respirometry. Results showed a highly significant association between stress responsiveness and angling vulnerability, specifically that individuals captured by anglers showed a smaller rise in cortisol levels after the air …
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