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 58 for “"induced flow"”.
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Geometry induced flow disturbances
… arterial system. In the vicinity of bifurcations flow tends to separate forming re-circulation regions. In addition, due to the pulsatile character of blood flow during the deceleration part of the cycle, the flow becomes unstable and transition to turbulence may occur. Vascular stents provide a …
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Seismic induced flow deformation and remediation study of Sardis Dam
… behaviour of Sardis Dam was evaluated using new flow deformation analysis technique which was developed by Finn and Yogendrakumar (1989). The analysis showed the potential for large displacements including a great loss of freeboard during the design earthquake. A strategy of designing remedial …
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Ignition and hydrodynamic ejections by laser-induced breakdowns
… ignition methods. Understanding of the breakdown-induced flow, its dependence on details of the plasma generation, and how it can alter and tailor ignition and subsequent flame growth will facilitate incorporation into engineering applications such as internal combustion engines and supersonic …
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Solutions for the flows induced by lazy, forced and pure turbulent plumes
… is employed to predict and gain insight into the flows induced by turbulent plumes and jets above slender horizontal slots, in otherwise quiescent uniform environments. To supplement the solutions, the effect on the environment of a plume driven by an off-source supply of buoyancy was also …
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Effect of tip-speed ratio on induced velocities near a lifting rotor
A theoretical investigation of the asymmetry of induced flow in the vicinity of a lifting rotor in forward flight has been conducted. The analysis is based upon an asymmetric wake which is a logical extension of that used for previous investigations. Equations for the induced velocities at an …
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Separation Bubbles and Vortex Formation in Cavity Flows
… lid driven cavities, this research on an inlet induced flow inside a square cavity lead to unusual and interesting basic fluid dynamical phenomena. The flow in a square cavity and in a cylindrical cavity is simulated over a range of Reynolds numbers and the appearance of separation bubbles and …
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An Airloads Theory for Morphing Airfoils in Dynamic Stall with Experimental Correlation
… the wake, the airloads theory is coupled to an induced flow model. Third, the overshoot and time delay associated with dynamic stall are modeled by a second-order dynamic filter, along the lines of the ONERA dynamic stall model. This paper presents a unified airloads model that allows arbitrary …
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Some flow properties of liquid helium II
The properties of pressure-induced flow of liquid helium II have been studied by the observation of the temperature and pressure dependence of the flow in narrow channels. The channels are in the form of an annular slit between two flat glass plates. Measurements of the flow rates have been made …
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The bound states of Dirac equation with a scalar potential
… interpreting the Dirac equation as a Hamiltonian flow on the 2-dimensional Euclidean space and a shooting argument for the induced flow on the space of its Lagrangian planes following a similar calculation by Jones (Ergodic Theor Dyn Syst, 8 (1988) 119-138). The two conditions are shown to be …
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Incorporation of silica into baroplastic core-shell nanoparticles
… are nanophase materials that exhibit pressure-induced flow at low temperatures and high pressures. Core-shell baroplastics used in this work are comprised of a low Tg poly(butyl acrylate) (PBA) core and a high Tg polystyrene (PS) shell. These novel polymer systems can be molded into fully …
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Thermal gradients and water transfer in unsaturated soil.
… an apparent steady state condition with no net flow. Imposition of boundary conditions enabled delineation and evaluation of the system parameters. Values of net water flux in soil columns were analyzed using the Taylor-Cary irreversible thermodynamic and the Philip-de Vries theory of water …
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Influence of hydrodynamics on the larval supply to hydrothermal vents on the East Pacific Rise
… A strong correlation between along-axis flow and daily larval supply suggested that larval supply occurred primarily via along-axis transport between local sources 1-2 km apart. However, weekly larval supply appeared to be driven by larger spatial scales through losses associated with …
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Development of a water sample concentrator for the concentration of bacteria in drinking water
… to the membrane filters, the use of vacuum induced flow through the concentrator and the possibility of monitoring bacterial levels through adenosine triphosphate analysis. In the field trials, the water sample concentrator detected coliform bacteria in drinking water in which no coliforms …
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Wind-Induced Exchange in Semi-Enclosed Basins
<p>The wind-induced circulation over laterally varying bathymetry was investigated in homogeneous and in stratified systems using the three-dimensional Regional Ocean Model (ROMS). For homogeneous systems, the focus was to describe the influence of the earth's rotation on the lateral distribution …
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A Dam Conundrum: The Role of Impoundments in Stream Flow Alteration
… Due to limited data regarding their size and flow, it has been difficult to assess how these smaller impoundments impact rivers. This study combined rainfall runoff data from the Chesapeake Bay Model with the unique routing framework of VA Hydro to create a simplistic hydrologic model capable …
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Rain Induced Runoff Simulation Using A 2D Numerical Model
… CCHE2D, a numerical model for free surface flow hydrodynamics, is applied to study the rain induced runoff and channel flow mixed problems. The main goal of this study is to incorporate rainfall as an input into the existing free surface flow model, CCHE2D; to verify and validate the CCHE2D …
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Measurement of aerodynamic characteristics of MAVs using motion tracking
… The results indicate that the propeller induced flow influences the aerodynamic performance of the aircraft. Results indicate a delay in the onset of stall, an increase in the lift curve slope, and reduction in drag with decreasing advance ratios (J). The results show a myriad of …
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Analysis of fountain effect for tiltrotor configuration using computational fluid simulation and experimental method
… of the obtained data was performed to interpret flow interactions between the rotor and wing in crosswind flight conditions and influences on the fountain effect. Further, a CFD simulation tool was used for comparison to these experiments. Also, a PIV experiment was performed to visualize the …
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The role of respiration-dependent proton translocation in the acid tolerance of Gluconobacter oxydans
… suspending solution suggested a NaCl-dependent flow of protons (H+) into the cells. Cells were then exposed to NaCI at pH 3.20 followed by the addition of glycerol to determine whether polyol oxidation resulted in H + explusion from the cells. Following glycerol addition, immediate acidification …
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