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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 14 of 14 for “"Cavity pressure"”.
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An experimental investigation of turbine blade tip heat transfer and tip gap flows in the supersonic regime
… performed at GE Aircraft Engines. The pressure distribution in the blade tip cavity of a grooved tip blade was found to vary little with either Mach number or tip gap height. The tip cavity pressure was, however, a strong function of location. The tip cavity pressure distribution …
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Experimental Design and Analysis of Piezoelectric Synthetic Jets in Quiescent Air
… performance gains. These devices consist of a cavity with an oscillating diaphragm that divides it, into active and passive sides. The active side has a small opening where a jet is formed, whereas and the passive side does not directly participate in the fluidic jet.Research has shown that the …
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Effect of an aeroelastic film on confined subsonic cavity resonance
… OF AN AEROELASTIC FILM ON CONFINED SUBSONIC CAVITY RESONANCE by Melissa Carter B.S., Mechanical Engineering, University of New Mexico, 2001 M.S., Mechanical Engineering, University of New Mexico, 2011 ABSTRACT Two shallow three-dimensional cavities were used to study the effect on cavity …
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Effects of high pressure solidification on the tensile properties of polypropylene
Injection pressures available on commercial injection molding machines have increased from 10,000 to 20,000 psi with 40,000 psi in prospect. The pressure during solidification should strongly influence the crystallinity, and hence mechanical properties, of those regular polymers which can …
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Wind-Induced Pressures in Air Permeable, Double-Layer Roof Systems in Regions of Separated Flow
This thesis is concerned with the wind-induced pressure distribution acting on air permeable, double-layer roof systems placed on low-rise buildings. Because of the pressure transmission into the cavity between layers, the pressure difference in the double-layer systems differs significantly from …
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An experimental investigation into the stress-dependent mechanical behavior of cohesive soil with application to wellbore instability
… tests make use of two new automated, high pressure Thick-Walled Cylinder (TWC) devices to study the effects of the following parameters on the borehole response: mode of loading, specimen geometry, preshear lateral stress ratio, drainage conditions, consolidation stress level, stress …
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Estimation of cavity pressures in air-permeable, multi-layer systems using a lumped-leakage approach
… buildings, the proper estimation of wind-induced pressures on the external façade, the roof surface, or the net pressures across elements like a canopy or parapet, which are exposed to wind on both sides, can be easily done using conventional wind tunnel tests. But in the case of air-permeable …
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Study of mouthguard design for endurance and air-flow enhancement
… distribution and air flow path by improving the pressure difference between the ambient (outside) and the oral cavity pressure (inside). A preliminary design has been study to simulate its total deformation and stress, in terms of Von Mises Stress by using ANSYS 15.0 Workbench. From the results, …
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HEAT TRANSFER IN SQUEEZE CASTING OF LIGHT ALLOYS
… has been carried out to characterize the pressure distribution in the die cavity during squeeze casting of magnesium alloy AM50. This experiment aimed to reveal the changes of pressure distribution with the cavity geometry as well as the local cavity pressure at various locations during …
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Fluid-structure interaction of a cantilevered plate in supersonic separated flow
… the study of recirculation effects and unsteady pressure forcing on the cantilevered plate in the absence of shock-boundary layer interactions that would be present if the plate were inclined to the flow. The height of the cavity has been chosen such that it corresponds to the height of a flap of …
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Micro-injection moulded microneedles for drug delivery.
… considering input parameters such as injection pressure, injection speed, melt temperature, filling time and mould cavity temperature. Response variables including product quality and data acquired from the cavity pressure and temperature transducers were used to optimise the manufacturing …
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The response of a suction anchor group to various applied loadings.
… apparatus were instrumented so that the pore pressure distribution due to puitping, the water flow rate, and anchor load and displacements during the tests could be measured. Pull-out tests under vertical loading være conducted on single anchors, of two geometries, at burial depths up to 11.3 …